Other former presidents are not only planning to attend, but at least two plan to speak about the American hero.
"As renegotiations get underway, it's important for the administration to recognize NAFTA's many contributions and not impose new barriers that could harm our ability to trade with our closest neighbors", he said in a written statement past year. "With the Senator when he passed were his wife Cindy and their family", his office said in a statement.
Trump and McCain had a contentious relationship in recent years. But in a state with a deeply divided Republican Party, where McCain was a towering but divisive figure, the choice is far more complicated. Trump's tweet was fairly generic.
The typical tradition is to keep the flag lowered until the body reaches its final resting place, which in the case of John McCain would be next Sunday when the Senator is expected to be buried at the U.S. Naval Academy in Annapolis, Maryland. "Our hearts and prayers are with you!"
In his darkest hour in Vietnam, McCain's will had been broken and he signed a confession that said, "I am a black criminal and I have performed deeds of an air pirate".
"It seems that every day, there's a sordid new revelation or allegation involving Donald, and it doesn't look likely to stop anytime soon".
Tom Ridge, who was governor of Pennsylvania from 1995 to 2001 and who led the office of Homeland Security from 2001 until 2005, called McCain a "dear friend" and principled leader.
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Police confirmed that Rivera was seen on surveillance footage driving in a Chevy Malibu in the area where Tibbetts was running. The alleged murderer told the police that he saw Tibbetts jogging and began following her in his vehicle .
But McCain became one of the president's sharpest critics, attacking him on foreign and domestic policy and disagreeing with his rhetoric, including Trump's sharp attacks on the news media and his fight in 2016 with the Gold Star family of a dead soldier.
Hanoi paid tribute Monday to former US Senator John McCain, a onetime foe who helped heal the wounds of the Vietnam War after spending years as a prisoner in the city.
McCain castigated Trump in July for his summit with Putin, calling their joint news conference in Helsinki "one of the most disgraceful performances by an American president in memory".
With a record as a moderate himself, Ridge praised fellow Republican McCain's across-the-aisle work during his decades of public service despite what he called the "unfortunate mindset today that somehow you're not a good Republican if you try to work with Democrats".
McCain's popularity among Republicans has dropped as Trump has taken over the party.
Meanwhile, more has been revealed about how his life is to be celebrated in the US.
"I never had a regret about that", he said.