Elizabeth Warren is questioning the legality of the OCC, under Jonathan Gould, approving or conditionally approving trust charter applications for several crypto companies.

The Senate Banking Committee's top Democrat sent a letter to the Office of the Comptroller of the Currency questioning the charters of nine crypto firms.

Last year, the OCC granted conditional approvals to Circle, Ripple, BitGo, Fidelity, and Paxos, as well as other firms more recently.