A recent deal between an Emirati investment firm and a cryptocurrency company tied to the Trumps could endanger national security, Warren said.

Sen. Elizabeth Warren is urging a federal watchdog to investigate a recently announced deal between a Trump-backed cryptocurrency company and an investment firm tied to the government of the United Arab Emirates.

Warren and Sen. Jeff Merkley of Oregon sent a letter to Jamieson Greer, acting director of the U.S. Office of Government Ethics, on Monday outlining their concerns.

The deal in question concerns the Emirati investment firm MGX, the crypto exchange Binance, and World Liberty Financial, a crypto company that lists President Trump and his sons as members of its team.