After appearing on a Sunday morning talk show, Sen. Bob Corker once again faced the ire of President Donald Trump on Twitter.

Corker denounced Trump's decisions on the government shutdown and pulling U.S. troops from Syria during an appearance Sunday on CNN's "State of the Union."

Corker called Sunday the federal government shutdown an unnecessary action and a "made up fight" perpetrated by the president.

"This is a purposefully contrived fight," Corker said told CNN.

Corker iterated it would also likely be one of the last times he would come on the show as a senator, and that he remained true to his original intention to only serve as a two-term senator.

That apparently prompted Trump to fire back at Corker.

Trump slammed Corker over his decision not to seek a third term, saying Corker "wanted to run but poll numbers TANKED when I wouldn't endorse him ..."

Trump also criticized Corker over the Iran nuclear deal, and Corker's comments on Syria.

Corker replied with his #AlertTheDaycareStaff, and criticized the president over his claims that he would make Mexico pay for the border wall.

Corker's history with Trump

Corker, a Chattanooga Republican who did not seek re-election in November, has had a tumultuous relationship with Trump over the past two years.

U.S. Rep. Marsha Blackburn, who Trump supported, won election to replace Corker in the U.S. Senate. She takes office Jan. 3.

Corker has criticized the president's handling of a number of issues, and the two have traded barbs — including on Twitter — even as they have worked together on a number of domestic and foreign policy matters.

That continued on Sunday.

Corker, the chairman of the Senate Foreign Relations Committee, told CNN he disagreed with the president's decision to pull U.S. troops out of Syria.

Corker said the president canceled a meeting between them to discuss his decision.

"I think he knows he's made a mistake," Corker said. "But the president’s tendencies are to dig in and double down."