Two Republican-led panels in the House of Representatives have recommended holding President Joe Biden’s son, Hunter, in contempt of the US Congress.
The committees both voted to send a contempt resolution for a House vote.
Hunter Biden has refused an order to testify in private about his business dealings as part of an impeachment inquiry into his father.
Mr Biden has said he would testify to the oversight committee, but only if it was a public hearing.
Republicans, however, said it was not for a private citizen to dictate the terms of a congressional subpoena.
The president’s son made a brief surprise appearance at one of the hearings earlier on Wednesday, throwing the session into chaos and angering Republicans.
He walked into the oversight committee’s hearing shortly after it began with his lawyer, Abbe Lowell, and sat silently with crossed arms as a series of lawmakers railed against him.
