A team of Senate Democrats is demanding answers and information from two companies that paid President Trump’s personal attorney Michael Cohen “substantial payments” through a shell company while both had business pending before the administration.

Sen. Elizabeth Warren (D-Mass.) and Sen. Richard Blumenthal (D-Conn.) authored May 14 letters questioning the CEOs of AT&T and Novartis. Senate Finance Committee Ranking Member Ron Wyden (D-Ore.) signed on to the AT&T letter.