An investigation into Ivanka Trump’s alleged use of her personal email account for government work is set to be launched.
A Congressional committee will review reports that President Donald Trump’s daughter, a top White House aide, violated preservation law.
It comes after suggestions Ivanka used her personal account up to 100 times last year to contact other officials in the Trump administration.
Use of a personal account for government business potentially violates a law requiring the preservation of all presidential records.
Mr Trump repeatedly criticised his Democratic rival Hillary Clinton in the 2016 presidential election campaign over her use of personal email and a private server while she was secretary of state.
Elijah Cummings, the top Democrat on the House Oversight Committee, said the panel will investigate White House communications when Democrats take over the House in January.
"We plan to continue our investigation of the presidential records act and federal records act, and we want to know if Ivanka complied with the law," his office said in a statement.
The current House Oversight committee chairman, Republican Trey Gowdy, also asked the White House for information related to Ivanka Trump's use of private email in a letter on Tuesday.
Republican Senator Ron Johnson, chairman of the Senate's Homeland Security committee, asked for a briefing on the topic.
The White House did not respond to a request for comment, but Mr Trump said his daughter's use of her personal email account was different from Clinton's.
"For a little period of time, Ivanka did some emails. They weren't classified like Hillary Clinton. They weren't deleted like Hillary Clinton... She wasn't doing anything to hide her emails," Mr Trump told reporters.
His daughter did not have a private server as Mrs Clinton did, Mr Trump said.
Peter Mirijanian, a spokesman for Ivanka Trump's ethics lawyer, Abbe Lowell, told the Washington Post the emails occurred before she was aware of government record-keeping regulations.
Since then, she has turned over all her government-related emails to be stored with other White House records, the Post reported.
