Sen. John Cornyn John CornynThe Hill's Campaign Report: GOP set to ask SCOTUS to limit mail-in voting Liberal super PAC launches ads targeting vulnerable GOP senators over SCOTUS fight Senate GOP faces pivotal moment on pick for Supreme Court MORE (R-Texas) said Tuesday that President Trump Donald John TrumpOmar fires back at Trump over rally remarks: 'This is my country' Pelosi: Trump hurrying to fill SCOTUS seat so he can repeal ObamaCare Trump mocks Biden appearance, mask use ahead of first debate MORE indicated during their flight back from Texas that he viewed the deal to avert a government shutdown as "thin gruel."

"My impression flying back from El Paso last night was he thinks it's pretty thin gruel," Cornyn said, referring to Trump's view of the tentative agreement that would prevent a second funding lapse scheduled to start Saturday.

Cornyn added that Trump didn't specifically use the words "thin gruel," but that he was characterizing his interpretation from their time together after a campaign rally where Trump touted his plan to build the U.S.-Mexico border wall.

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"I think the president is considering his options. I don't think we're headed toward another shutdown," Cornyn added.

A group of four negotiators announced Monday night that they had an agreement "in principle" that would fund roughly a quarter of the federal government and provide $1.375 billion for physical barriers along the U.S.-Mexico border.

Several Republicans, including Cornyn, suggested on Tuesday that they had not yet seen final details of the agreement and wanted to hear from the White House. Sen. Mike Rounds Marion (Mike) Michael RoundsSenate GOP sees early Supreme Court vote as political booster shot Chamber of Commerce endorses McSally for reelection Senate GOP eyes early exit MORE (R-S.D.) said Republicans had been given a one-page top line summary of the deal.

Trump hasn't yet said if he will support the funding agreement. Republicans have tried to stick closely to Trump publicly on the wall fight after he caught Capitol Hill off guard last year when he refused to sign a continuing resolution that didn't include his demand for billions of dollars in border wall funding.

Sen. Richard Shelby Richard Craig ShelbySenate GOP eyes early exit Dems discussing government funding bill into February GOP short of votes on Trump's controversial Fed pick MORE (R-Ala.), who helped craft the deal, said Tuesday that he didn't know if Trump would sign, but hoped that he would.

"Only indication we have is the staff … was working with us all along. That doesn't meant the president will sign it or not sign it. But I would think if we pass it in the House and the Senate by a good margin, the president will sign that. But I don't know. I can't speak for the president," he said.

Trump didn't say Tuesday if he would sign or veto the spending legislation if it reaches his desk, but said he wasn't "thrilled" with the deal.

“I can’t say I’m happy. I can’t say I’m thrilled,” Trump told reporters during a Cabinet meeting.