Sen. Josh Hawley (R-Mo.) is preparing to file subpoena requests for multiple new witnesses to testify in President Donald Trump's Senate impeachment trial.

According to Politico, Hawley is targeting House Intelligence Committee Chairman Adam Schiff (D-Calif.), Joe Biden, Hunter Biden, and the Ukraine whistleblower, among others.

"I have drafted motions to subpoena Adam Schiff, the 'whistleblower,' Hunter Biden, and Joe Biden to testify. If the Senate calls witnesses, I will ask for votes on all these next week," Hawley announced on Twitter.

From Politico:

Hawley's strategy harmonizes with plans from GOP Sens. Ted Cruz of Texas and Rand Paul of Kentucky to force votes to hear from Hunter Biden, the former vice president's son who was on the board of Ukrainian energy company Burisma.

Their tactics are intended to convince a handful of senators to sink a vote next week to consider new evidence in President Donald Trump's impeachment trial. Trump's attempt to pressure Ukraine to investigate the Bidens is at the heart of the impeachment case against the president.

If Hawley is able to issue the subpoenas, he would also seek communications related to Schiff and his staff, the whistleblower, the House impeachment managers, and Joe Biden's admitted effort to oust a former top Ukrainian prosecutor, among other communications.

Hawley needs just a simple majority vote to seek the evidence and issue the subpoenas. The tactic would also undercut the Democratic narrative that Republicans are unwilling to consider new evidence and witnesses during Trump's Senate trial.