Rep. Jim Banks is calling on fellow Republican Sen. Lindsey Graham to ratchet up his defense of President Donald Trump, as House Republicans race to influence the Senate GOP’s strategy in a looming impeachment trial.

In a Wednesday letter to Graham, Banks (R-Ind.) encouraged the Senate Judiciary Committee chairman to “rethink” his impeachment strategy, in the latest sign that the House GOP is growing restless with their Republican colleagues across the Capitol.

The letter comes after Graham, a top Trump ally, rebuffed a number of the House GOP’s calls for hard-line tactics to defend Trump — including a request from Banks to subpoena the phone records of House Intelligence Chairman Adam Schiff (D-Calif.), who led the Democrats’ impeachment inquiry.

But while Trump and his conservative allies in the House are pushing for an aggressive defense in the Senate impeachment trial — which they view as a chance to go on offense and clear the president’s name — Senate GOP leaders are taking a different approach. They’ve made clear that they don’t want the trial to turn into a spectacle, increasing the likelihood that long-simmering tensions between the House and Senate GOP could boil over.

“It is urgent we fight fire with fire and tell them enough is enough,” Banks said in the letter, obtained by POLITICO. “House Republicans have done all they can to push back and expose their motives to the American people, soon it will be at your doorstep.”

Banks also asked Graham to reconsider his position on conducting a speedy trial.