The Obamas meet the Camerons – in pictures

Samantha Cameron, wife of the British prime minister David Cameron, pay respects at Ground Zero memorial in New York Photograph: Stefan Rouseau/PA

David Cameron during a question and answer session at New York University's Leonard N. Stern School of Business Photograph: Mike Segar/Reuters

David Cameron walks through the streets of Newark, New Jersey, with mayor Cory Brooker Photograph: Stefan Rouseau/PA

David and Samantha Cameron leave Andrews airforce base in Washington DC Photograph: Stefan Rouseau/PA

President Barack Obama and first lady Michelle Obama greet British prime minister David Cameron and his wife Samantha Cameron at the North Portico of the White House Photograph: Mandel Ngan/AFP/Getty Images

Michelle Obama and Samantha Cameron chat as they arrive for the state dinner Photograph: Shawn Thew/EPA

White House state dinner table settings for Samantha Cameron and President Barack Obama Photograph: Rex Features/Rex Features

David Cameron, Michelle Obama and actor George Clooney listen to Barack Obama address guests over dinner Photograph: Stefan Rousseau/PA

David Cameron shakes hands with Barack Obama during speeches Photograph: Mandel Ngan/AFP/Getty Images

An intimate chat in the Oval Office Photograph: Doug Mills/AFP/Getty Images

David Cameron and Hillary Clinton enjoy a joke delivered by vice-president Joe Biden. Photograph: Jonathan Ernst/Reuters

David Cameron and his wife Samantha visit the National Children's Center in Washington Photograph: Manuel Balce Ceneta/AP

Barack Obama and David Cameron wait for their wives sd they leave the south lawn Photograph: Jim Lo Scalzo/EPA

Obama and Cameron greet the crowd during the official arrival ceremony Photograph: Mark Wilson/Getty Images

Obama speaks as Cameron listens Photograph: Alex Wong/Getty Images

Michelle Obama and Samantha Cameron during the welcoming ceremony Photograph: Jim Watson/AFP/Getty Images

Barack Obama laughs with Britain's deadpan chancellor, George Osborne Photograph: Jason Reed/Reuters

The wave from the balcony Photograph: Chip Somodevilla/Getty Images

Barack Obama and David Cameron arrive at University of Dayton Arena for an NCAA basketball game in Dayton, Ohio Photograph: Jim Watson/AFP/Getty Images

Obama and Cameron watch the game. Whose pose is it anyway? Photograph: Carolyn Kaster/AP

Barack Obama turns around as a supporter passes him a campaign badge Photograph: Matt Sullivan/Reuters

Classic: hot dogs in the stands Photograph: Jim Watson/AFP/Getty Images

She scores, she cheers Photograph: Chip Somodevilla/Getty Images

Thumbs up from Obama and applause from Cameron Photograph: Mandel Ngan/AFP/Getty Images

Obama and Cameron talk with the US women's national soccer team
Photograph: Haraz N. Ghanbari/AP

The couple, with the US chief of protocol, Capricia Marshall (right), listen to the British national anthem Photograph: Stefan Rousseau/PA

David and Samantha Cameron disembark from their plane at Andrews air force base in Maryland Photograph: Nicholas Kamm/AFP/Getty Images