Senate Veterans Affairs Committee Chairman Johnny Isakson (R-Ga.) said Wednesday that he's had enough of the president's attacks against the late Sen. John McCain (R-Ariz.).

Isakson said that Trump's insistence on trashing the Vietnam War veteran and longtime Republican leader came to a head with the president's most recent jab on Tuesday.

"I was never a fan of John McCain's and I never will be," Trump said while hosting Brazilian President Jair Bolsonaro.

Speaking in a radio interview on Georgia Public Broadcasting, the 74-year-old senator said "we should never reduce the service that people give to our country."

"You may not like immigration, you may not this, you may not like that, you may be a Republican or a Democrat. We're all Americans. "There aren't Republican casualties, there aren't Democratic casualties on the battlefield, there are American casualties," Isakson continued. 

His comments came one day after he fumed over Trump's comments in an interview with A.B. Stoddard.

"The country deserves better, the McCain family deserves better, I don’t care if he’s president of United States, owns all the real estate in New York, or is building the greatest immigration system in the world," said Isakson.

"Nothing is more important than the integrity of the country and those who fought and risked their lives for all of us."

Isakson said that he previously informed Trump of his opposition to his anti-McCain rhetoric after the White House flag was not immediately lowered to half staff at the time of his 2018 death -- then only lowered for one day.

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He called the move "unthinkable," as it is customary for the Stars & Stripes to remain at half staff until the body of the dignitary being honored is interred.

"Anybody who tarnishes the reputation of John McCain deserves a whipping, because most of those who would do the wrong thing about John McCain didn’t have the guts to do the right thing when it was their turn. We need to remember that," Isakson said at the time of McCain's death. 

Trump stirred the controversy anew over the weekend when he referred to McCain as "last in his class" in the Navy. 

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