'Do not despair': Read John McCain's farewell letter

Finally, under pressure from veterans and members of Congress, Trump said in a statement later on Monday that he respected McCain's service to the nation and had ordered flags to half-staff.

Johnny Isakson (R-GA) seemed to allude to President Donald Trump when using flowery language to describe what he thinks about those who "disrespect" the late John McCain. And he criticized the senator on Twitter, especially when their policy views differed.

Things go so bad that some veterans groups began publicly shaming Trump to put his political differences aside and honor the late war hero, lawmaker and fellow Republican. For the last time, the fiery Arizona senator stepped in to call for patriotism over politics when Trump would not. "Our hearts and prayers are with you!"

"Do not despair of our present difficulties but believe always in the promise and greatness of America, because nothing is inevitable here", McCain wrote shortly before his death.

The Arizona Republican died on Saturday of brain cancer.

Even as flags remained at half-staff yesterday at the Capitol, the Washington Memorial and elsewhere, the White House flag was raised.

He also said he'd agreed to the McCain family's request for military transportation of the senator's remains from Arizona to Washington.

The White House lowered its USA flag to half-staff, raised it back up and on Monday lowered it again after the death of Senator John McCain, in an unusual and confusing break with protocol on the passing of a national leader.

Meanwhile, Gov. Charlie Baker said in MA, the flags will continue to be flown at half-staff until McCain's interment.

In his closing statement, McCain acknowledged he was not without his flaws but said he tried to serve the country "honorably".

In Romania, McCain was remembered for urging the government to maintain its fight against corruption.

Republican Sen. Chuck Grassley of Iowa, who served with McCain for 31 years, said he was in favor of "naming nearly any building" for McCain, but added, "I'm not sure that I would make a decision on a specific building at this point".

The two men who defeated McCain in his White House campaigns, Republican George W. Bush and Democrat Barack Obama, are expected to deliver eulogies at a Saturday service at the National Cathedral in Washington, a day after McCain's body lies in state in the US Capitol.

Mr. McCain will be buried on Sunday at the US Naval Academy in Annapolis, Maryland, in a private funeral service.

Until that point, Trump had not issued a formal statement on McCain or commented on his service to the country, instead tweeting brief condolences Saturday to the senator's family.

McCain was a frequent critic of Trump on everything from his leadership style to his Russian Federation policy.

During the 2016 campaign, Mr. Trump mocked McCain's war service. "I cry for a man who had honor and always was willing to admit to his imperfection".

"At a time like this, you would expect more of an American president when you are talking about the passing of a true American hero".