Rep. Jim Banks (R-Ind.), one of Trump’s House allies, asked Graham in a letter Wednesday to subpoena AT&T for the call records of House Intelligence Committee Chairman Adam Schiff (D-Calif.), former Vice President Joe Biden and his son Hunter Biden, as well as the attorney for Ukraine whistleblower, Mark Zaid.

“Chairman, I urge you to utilize your subpoena power as Chairman of the Senate Judiciary Committee and obtain call records for the following individuals: Rep. Adam Schiff, The whistleblower’s lawyer Mark Zaid, Former Vice President Joe Biden, and Hunter Biden,” Banks wrote to Graham.

“This quixotic impeachment inquiry must be shelved, Mr. Chairman. And Rep. Adam Schiff should be held to the same standard to which he holds others. It is time to see his phone records,” he continued.