Six senators accused Deputy Attorney General Todd Blanche this week of having a conflict of interest when he shut down investigations into crypto companies, dealers and exchanges and eliminated an enforcement team dedicated to looking for crypto-related fraud and money-laundering schemes.

A letter written by Democratic Sens. Elizabeth Warren, Dick Durbin and Mazie Hirono and signed by Sens. Sheldon Whitehouse, Christopher Coons and Richard Blumenthal cited a ProPublica investigation that revealed Blanche owned at least $159,000 worth of crypto-related assets when he ordered an end to the work.

Durbin, Hirono, Whitehouse, Coons and Blumenthal serve on the Senate Judiciary Committee, which oversees the Justice Department.

The…