AFTER sweeping both chambers of the US Congress, Democrats will turn their new investigative powers on the Trump family's business deals as they make what they call corruption a central part of a 2028 campaign for the White House.

Democrats seized control of both the Senate and House of Representatives in Tuesday's midterm elections, in which tens of millions of voters delivered a rebuke to President Donald Trump.

"LAWYER UP," US Representative Robert Garcia, who is set to become chairman of the House Oversight Committee, posted on X late on Tuesday.

"Subpoenas," Senator Ron Wyden, who is expected to lead the Senate Finance Committee, wrote an hour later.