President Barack Obama: The first 100 days

20 January: In a holding room at the Capitol in Washington Barack H Obama has a moment alone to gather his thoughts before he is sworn in by Chief Justice John Roberts as the 44th president of the United States Photograph: Charles Ommanney/Getty Images

20 January: President George Bush walks out with President-elect Obama on the north portico of the White House before sharing the presidential limousine en route to Capitol Hill for Obama's inauguration Photograph: Pablo Martinez Monsivais/AP

20 January: Obama takes the oath of office from the US supreme court chief justice, John Roberts, as his wife Michelle holds the Lincoln Bible and daughters Sasha, right, and Malia watch at the US Capitol building Photograph: Chuck Kennedy/AP

20 January: This satellite photo shows crowds on the National Mall during Obama's inauguration Photograph: GeoEye/AFP/ Getty Images

20 January: President Obama and first lady Michelle dance together as singer Beyoncé performs at the Neighborhood Inaugural Ball Photograph: Brooks Kraft/Corbis

20 January: Obama and first lady Michelle, with staff and secret service agents, ride a freight elevator to get to an inaugural ball in Washington Photograph: Pete Souza /EPA

21 January: President Obama rides the elevator after attending 10 inaugural balls following a long day which included being sworn in at the Capitol Photograph: Pete Souza /EPA

21 January: President Obama walks into the Oval Office of the White House on the first full day of his term Photograph: Pete Souza/Getty Images

21 January: The president meets White House chief of staff Rahm Emanuel Photograph: Pete Souza/AFP/Getty Images

21 January: President Obama meets US secretary of state Hillary Clinton shortly after she was sworn in Photograph: Pete Souza /EPA

21 January: Chief Justice John G Roberts administers the oath of office to Obama for a second time in the map room of the White House Photograph: Pete Souza/Getty Images

22 January: The president signs an executive order in the Oval Office to close down the detention centre at Guantánamo Bay. Obama had promised to close the prison camp throughout his presidential campaign Photograph: Mark Wilson/Getty Images

22 January: Obama, surrounded by White House correspondents, tours the Brady press briefing room at the White House Photograph: Manuel Balce Ceneta/AP

27 January: President Obama returns to the White House after a visit to Capitol Hill Photograph: Brooks Kraft/Corbis

27 January: President Obama approaches the media to make a statement on Capitol Hill in Washington after meeting legislators Photograph: Lawrence Jackson/AP

28 January: Obama shakes hands with guests after making remarks on the economy in the east room of the White House following a meeting with business leaders Photograph: Brooks Kraft/Corbis

29 January: The president hugs tyre factory worker Lilly Ledbetter before signing the Lilly Ledbetter Fair Pay Act during an event in the east room of the White House. The act was passed by Congress granting equal pay to all women Photograph: Mark Wilson/Getty Images

30 January: The president, left, and vice-president Joe Biden on stage before Obama signed the Middle Class Working Families Task Force executive order in the east room of the White House Photograph: Jason Reed /Reuters

2 February: Personal photographs are seen behind the president's desk in the Oval Office Photograph: Larry Downing /Reuters

3 February: Obama and first lady Michelle take questions from students at the Capital City Public Charter School in Washington Photograph: Charles Ommanney/Getty Images

5 February: President Obama speaks at the Department of Energy Photograph: Charles Ommanney/Getty Images

9 February: Obama addresses Indiana residents during a town hall-style meeting at Concord high school. The Elkhart-Goshen area of Indiana had the highest jobless rate increase in the US over the last 12 months, up 4.7% to 15.3% Photograph: Charles Ommanney/Getty Images

9 February: President Obama speaks during a news conference in the east room of the White House in Washington. Before taking questions from the news media, Obama began his first primetime news conference by urging Congress to pass the Economic Recovery and Reinvestment Plan Photograph: Charles Ommanney/Getty Images

10 February: President Obama talks with the media aboard Air Force One en route to Fort Myers, Florida Photograph: Brooks Kraft/Corbis

10 February: Obama waves as he walks to his limousine upon his arrival at MacDill air force base in Fort Myers, Florida. Obama travelled to the state to push for his administration's economic stimulus package Photograph: Jason Reed/Reuters

12 February: The president speaks on the economy during a visit to the Caterpillar manufacturing facility. Caterpillar had announced massive layoffs, up to 20,000 workers in the first quarter of 2009, as orders for its earth-moving equipment dropped off as a result of the global recession Photograph: Tannen Maury/EPA

12 February: President Obama greets employees after speaking about the economy during a visit to the Caterpillar plant Photograph: Brooks Kraft/Corbis

12 February: Obama meets an Abraham Lincoln impersonator during a celebration of Lincoln's birth bicentenary at the reopening of Ford's Theatre in Washington where Lincoln was assassinated Photograph: Jason Reed /Reuters

17 February: President Obama during a tour of the solar array at the Denver Museum of Nature and Science in Colorado Photograph: Charles Ommanney/Getty Images

17 February: President Obama signs the $787bn economic stimulus bill at the Denver Museum of Nature and Science Photograph: Barry Gutierrez/AP

18 February: President Obama speaks to a crowd at Dobson high school in Mesa, Arizona. Obama spoke about his $275bn mortgage relief plan, part of a $787bn stimulus package that will fund infrastructure projects, renewable energy projects and healthcare Photograph: Charles Ommanney/Getty Images

19 February: President Obama walks with the governor general of Canada Michaëlle Jean upon his arrival at Ottawa international airport. Obama arrived in Canada on his first trip abroad since taking office Photograph: Charles Ommanney/Getty Images

19 February: Obama shows increasing grey hair as he boards Air Force One Photograph: Blair Gable /Reuters

20 February: President Obama works with Jon Favreau, Ben Rhodes and David Axelrod in the Oval Office on his address to a joint session of Congress Photograph: Charles Ommanney/Getty Images

22 February: Obama and first lady Michelle enter the east room to hear Earth Wind and Fire perform at the governors' dinner at the White House Photograph: Kevin Lamarque/Reuters

23 February: Obama speaks during the closing of the Fiscal Responsibility Summit in the Eisenhower executive office building adjacent to the White House Photograph: Charles Ommanney/Getty Images

24 February: The president gives his address to a joint session of Congress on Capitol Hill Photograph: Jonathan Ernst/Reuters

24 February: Obama greets guests after his address to Congress at the Capitol building Photograph: Saul Loeb/AFP

25 February: The president and first lady arrive for a performance by Stevie Wonder at the White House after the singer received the Library of Congress Gershwin Prize Photograph: Charles Ommanney/Getty Images

25 February: Obama stands next to musician Stevie Wonder as he awards him the Library of Congress Gershwin prize Photograph: Reuters/Jim Young

26 February: Obama holds a personalised jersey as he meets members of the Chicago Bulls basketball team in the blue room at the White House Photograph: KPA/Zuma /Rex Features

27 February: President Obama, sitting next to five-year-old Nick Aiello, sips a beer during the Washington Wizards NBA basketball game against the Chicago Bulls Photograph: Molly Riley/Reuters

27 February: Obama waves to Marines at Camp Lejeune, North Carolina, after announcing plans to withdraw all US combat forces from Iraq by the end of August 2010 Photograph: Jim Young /Reuters

2 March: Obama pauses after announcing Kathleen Sebelius, the governor of Kansas, as his choice for health and human services secretary Photograph: Brooks Kraft/Corbis

3 March: Gordon Brown visits Obama at the White House Photograph: Ron Edmonds/AP

4 March: Obama and John McCain, the US senator from Arizona, leave a press conference after the president announced his plan to reform the US government's contracting system Photograph: Alex Wong/Getty Images

5 March: Obama makes remarks at the White House forum on health reform Photograph: Jim Watson/AFP

5 March: Guests crowd around Obama after the closing session of the forum on health care reform in the east room of the White House Photograph: Chip Somodevilla/Getty Images

6 March: Obama speaks during a graduation ceremony for Columbus, Ohio, police officers. Obama said the new jobs were created using money from his economic recovery plan Photograph: Matt Sullivan/Getty Images

8 March: Celebrities including Bill Cosby and James Taylor join Obama as they sing Happy Birthday to Ted Kennedy at the Kennedy Centre in Washington Photograph: Chris Usher/Getty Images

14 March: During Gordon Brown's visit to Washington, the PM gave Obama this pen holder crafted from the wood of the HMS Resolute's sister ship. The ship's timbers were used to make the Resolute Desk in the Oval Office Photograph: Brooks Kraft/Corbis

14 March: Luiz Inácio Lula da Silva, Brazil's president, and Obama shake hands in the Oval Office Photograph: Brooks Kraft/Corbis

15 March: Obama runs with Bo, the Obama family's dog, down a hallway of the White House. Bo made his official debut on 14 April Photograph: Pete Souza/AP

16 March: Timothy Geithner, US treasury secretary, stands by Obama as the president delivers remarks to small business owners, community leaders and members of Congress Photograph: Chip Somodevilla/Getty Images

19 March: Obama makes an appearance on the Tonight Show with Jay Leno in Burbank, California Photograph: NBC /Rex Features

18 March: Obama hosts a town hall meeting in Costa Mesa, California Photograph: Robyn Beck/AFP

18 March: Obama fields questions from the public at a town hall meeting Photograph: David McNew/Getty Images

18 March: Obama makes a point at a town hall meeting at the Orange county fair in Costa Mesa Photograph: Brooks Kraft/Corbis

20 March: Obama meets Arnold Schwarzenegger, California's governor, at the White House Photograph: Jim Young /Reuters

24 March: Obama, accompanied by members of Congress and school children, makes a video conference call to astronauts Photograph: Gerald Herbert/AP

24 March: Obama is seen on a television camera monitor during a news conference at the White House Photograph: Brooks Kraft/Corbis

24 March: Obama leaves the east room of the White House after a primetime press conference Photograph: Alex Wong/Getty Images

25 March: Barack Obama greets US veterans after laying a wreath at the tomb of the unknown soldier at Arlington national cemetery Photograph: Matthew Cananaugh/Getty Images

26 March: Obama takes part in an online town hall meeting at the White House Photograph: Jim Young /Reuters

27 March: Obama walks onto the stage at George Washington University for the ceremonial installation of Eric Holder as US attorney general Photograph: Chip Somodevilla/Getty Images

27 March: Obama laughs as US attorney general Eric Holder jokes about his basketball skills Photograph: Chip Somodevilla/Getty Images

30 March: Obama walks away from the podium after making an announcement about the American auto industry at the White House Photograph: Mark Wilson/Getty Images

31 March: Marine One, the helicopter carrying Barack and Michelle Obama, lands at Winfield House in London for the G20 summit Photograph: Saul Loeb/AFP

1 April: A television presenter carries an Obama cut-out before the president's arrival at a Nato summit in Baden-Baden, Germany Photograph: Federico Gambarini/EPA

1 April: Obama shakes hands with a police officer outside 10 Downing Street Photograph: Toby Melville/Reuters

1 April: Obama meets Gordon Brown ahead of the G20 summit Photograph: Charlie Bibby/Financial Times/NPA Pool

1 April: Obama and US treasury secretary Tim Geithner walk together after meeting Gordon Brown Photograph: Pablo Martinez Monsivais/AP

1 April: Obama looks over his shoulder as secretary of state Hillary Clinton walks in on the president's meeting with Chinese leader Hu Jintao at Winfield House Photograph: Jason Reed /Reuters

1 April: Michelle Obama puts her arm around the Queen during a reception for G20 leaders at Buckingham Palace Photograph: Reuters

2 April: Barack Obama, Silvio Berlusconi and Dmitry Medvedev are all smiles at a photo shoot for G20 leaders Photograph: Stefan Rousseau/PA

3 April: Barack and Michelle Obama meet French president Nicolas Sarkozy and his wife Carla Bruni-Sarkozy in Strasbourg Photograph: Shawn Thew/EPA

5 April: Barack and Michelle Obama arrive on stage before the president's speech in Prague Photograph: Jason Reed/Reuters

6 April: Obama and Abdullah Gül, the president of Turkey, leave their joint news conference in Ankara Photograph: Jason Reed /Reuters

7 April: Obama tours the Blue Mosque in Istanbul Photograph: Jim Young /Reuters

7 April: Obama steps off Air Force One at Baghdad international airport Photograph: Mandel Ngan/AFP

7 April: Obama speaks to members of the US military in Baghdad during a surprise trip to Iraq Photograph: Charles Dharapak/AP

13 April: President Obama, vice-president Joe Biden and secretary of transportation Ray LaHood highlight projects and jobs created by the president's economic stimulus plan Photograph: Michael Reynolds/Getty Images

16 April: Felipe Calderón, Mexico's president, talks to Barack Obama during a banquet in Mexico City Photograph: Ronaldo Schemidt/AFP

13 April: Obama stands next to the Easter bunny during the annual Easter egg roll at the White House Photograph: Mandel Ngan/AFP

14 April: Obama runs with his family and and their new dog, Bo, a six-month-old Portuguese water dog, on the south lawn of the White House Photograph: Jim Young/Reuters

14 April: Obama delivers a speech on the economy at Georgetown University in Washington Photograph: Alex Wong/Getty Images

16 April: A man walks past posters of Barack Obama before the Summit of the Americas in Port of Spain, Trinidad and Tobago Photograph: Jose Gomez /Reuters

17 April: Obama arrives for the opening ceremony of the Summit of the Americas Photograph: Carlos Barria/Reuters

17 April: Barack Obama shakes the hand of Hugo Chávez, Venezuela's president, during the Summit of the Americas Photograph: AFP/Getty Images

18 April: Álvaro Uribe, Colombia's president, displays a diagram he drew for Barack Obama during the Summit of the Americas Photograph: Andres Leighton/AP

19 April: Barack Obama is seen inside his limousine as he arrives for the final meeting of the Summit of the Americas Photograph: Brennan Linsley/AP

19 April: Obama, poses for a photo with Geeta Malik and her daughter Reina Gibbs on the south lawn of the White House Photograph: Pablo Martinez Monsivais/AP

20 April: Tiger Woods meets Obama at the White House Photograph: Pete Souza/Getty Images

20 April: Obama delivers a speech at CIA headquarters in Langley, Virginia Photograph: Gerald Herbert/AP

21 April: US senator Ted Kennedy prepares to introduce President Obama Photograph: Mark Wilson/Getty Images

21 April: Obama meets King Abdullah of Jordan at the White House Photograph: Brooks Kraft/Corbis

21 April: Obama meets the US Naval Academy football team as he presents them with the commander-in-chief trophy Photograph: Jason Reed/Reuters

21 April: Obama and former US president Bill Clinton walk together as vice-president Joe Biden looks on during a tree planting event at Kenilworth aquatic gardens in Washington Photograph: Martin H. Simon /EPA

26 April: White House press secretary Robert Gibbs watches video of Barack Obama during a taping of NBC's Meet the Press Photograph: Brendan Smialowski/Getty Images

28 April: Barack Obama reacts after FBI director Robert Mueller gave him a hat prior to the president's speech at the bureau's headquarters Photograph: Saul Loeb/AFP/Getty Images