American lawmakers have more questions for Silvergate, the embattled crypto bank. In a new letter to Silvergate CEO Alan Lane, three U.S. senators claim that the crypto bank’s dealings with the doomed FTX exchange “further introduced crypto market risk into the traditional banking system,” and demand more information. Signed by Elizabeth Warren (D-Mass. ), John Kennedy (R-La. ), and Roger Marshall (R-Kan.), the bipartisan group specifically mentioned a large cash loan Silvergate took out to shore up its accounts following mass user withdrawals last year.