Sen. Lindsey Graham finally came to the defense of John McCain and called him “one of the most consequential senators” in history amid renewed attacks from Donald Trump against his late friend and GOP colleague.

“As to @SenJohnMcCain and his devotion to his country: He stepped forward to risk his life for his country, served honorably under difficult circumstances, and was one of the most consequential senators in the history of the body,” Graham tweeted on Sunday.

“Nothing about his service will ever be changed or diminished.”

As to @SenJohnMcCain and his devotion to his country: He stepped forward to risk his life for his country, served honorably under difficult circumstances, and was one of the most consequential senators in the history of the body. (1/2)

— Lindsey Graham (@LindseyGrahamSC) March 17, 2019

Nothing about his service will ever be changed or diminished. (2/2)

— Lindsey Graham (@LindseyGrahamSC) March 17, 2019

Graham, who is an ally of the president and was one of McCain’s closest friends in the Senate, spoke out hours after Trump issued his second tweet in as many days targeting McCain.

Trump disparaged McCain over reports that one of the then-senator’s associates had shared a dossier of allegations about Trump’s ties to Russia with the media.

“So it was indeed (just proven in court papers) ‘last in his class’ (Annapolis) John McCain that sent the Fake Dossier to the FBI and Media hoping to have it printed BEFORE the Election,” Trump tweeted on Sunday. “He & the Dems, working together, failed (as usual). Even the Fake News refused this garbage!”

So it was indeed (just proven in court papers) “last in his class” (Annapolis) John McCain that sent the Fake Dossier to the FBI and Media hoping to have it printed BEFORE the Election. He & the Dems, working together, failed (as usual). Even the Fake News refused this garbage!

— Donald J. Trump (@realDonaldTrump) March 17, 2019

On Saturday, Trump quoted former independent counsel Ken Starr, who called it a “very dark stain” against McCain that he had helped spread the dossier.

“He had far worse ‘stains’ than this, including thumbs down on repeal and replace after years of campaigning to repeal and replace!” the president tweeted, referring to the Arizona lawmaker’s vote against the GOP Senate majority during the Republican attempt to repeal ObamaCare in 2017.

Spreading the fake and totally discredited Dossier “is unfortunately a very dark stain against John McCain.” Ken Starr, Former Independent Counsel. He had far worse “stains” than this, including thumbs down on repeal and replace after years of campaigning to repeal and replace!

— Donald J. Trump (@realDonaldTrump) March 16, 2019

Trump and McCain had a fraught relationship, with the Senate icon remaining one of the president’s staunchest Republican critics even after his cancer diagnosis.

McCain died last August, but the president has occasionally brought up his vote against the GOP effort to repeal ObamaCare in 2017 since then.