US Supreme Court Justice Clarence Thomas concealed information about his yacht trip to Russia.
This is stated in a letter from two Democratic senators to Attorney General Merrick Garland.
They caught Thomas hiding information about gifts from a billionaire Republican donor, Newsweek writes.
In their address, the senators called on Garland to appoint a special prosecutor to investigate the matter.
They claim Thomas's list of likely undisclosed gifts and income included a yacht trip to Russia in 2003.
Clarence Thomas could also visit the palace in St. Petersburg by private helicopter.
Thomas has faced months of calls for his resignation and attempts to impeach him.
US Supreme Court justice charged after lavish trips funded by Republican billionaire
