President Trump said Tuesday that he got "multiple standing ovations" in his lunch with GOP senators, part of an effort to promote party unity as the GOP aims to pass comprehensive tax reform.

"So nice being with Republican Senators today. Multiple standing ovations! Most are great people who want big Tax Cuts and success for U.S.," Trump tweeted Tuesday about the meeting.

So nice being with Republican Senators today. Multiple standing ovations! Most are great people who want big Tax Cuts and success for U.S. — Donald J. Trump (@realDonaldTrump) October 24, 2017

Sen. John Kennedy John Neely KennedyMORE (R-La.) told reporters on Tuesday that Trump got three standing ovations at the meeting. When asked by reporters if the standing ovations were a response to anything in particular that Trump said, Kennedy responded that the reaction was only because Trump was the president.

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Trump's tweet comes after Sen. Jeff Flake Jeffrey (Jeff) Lane FlakeJeff Flake: Republicans 'should hold the same position' on SCOTUS vacancy as 2016 Republican former Michigan governor says he's voting for Biden Maybe they just don't like cowboys: The president is successful, some just don't like his style MORE (R-Ariz.) on Tuesday afternoon announced his decision not to run for reelection in 2018, delivering a blistering speech on the Senate floor that called out Trump for his "mercurial behavior." The speech earned a standing ovation from some of the Republicans in the chamber.

Flake's announcement also came the same day a feud reignited between Trump and Sen. Bob Corker Robert (Bob) Phillips CorkerHas Congress captured Russia policy? Tennessee primary battle turns nasty for Republicans Cheney clashes with Trump MORE (R-Tenn.). Like Flake, Corker has also announced his retirement and has been a vocal critic of the president. Both senators were present in the Tuesday meeting on tax reform.

Corker said on Tuesday that he will not support Trump for reelection, saying the president has performed poorly and accusing him of "debasing our nation" with his rhetoric.

— Melanie Zanona and Niv Elis contributed to this report.