Former Secretary of State Henry Kissinger and Former Senator Joseph Lieberman will also speak.
With McCain's death and Flake's resignation, Arizona's presence in the U.S. Senate will be looking different in 2019-and if Sinema performs well in November, one of those seats might be held by a Democrat next year. Previously known simply as the Senate Office Building, it was renamed in Russell's honor the year after his death. While most people understood the errors of the Iraq War, it took McCain 15 years to finally concede that it was a mistake.
McCain was a frequent Trump critic and his family has said he did not want the president to attend his funeral.
"We weaken our greatness when we confuse our patriotism with tribal rivalries that have sown resentment and hatred and violence in all the corners of the globe", McCain wrote in the letter.
Flags flying a half-staff in honor of Sen. John McCain by creating an official group to vet a variety of memorial options.
Two days after Senator McCain's death, Mr Trump said he respected the senator's "service to our country" and had signed a proclamation to fly the United States flag at half-staff until his burial.
Graham concluded his remarks by saying that without McCain, he'll be on a lonely journey "for a while" and that he shouldn't be looked upon to replace his dear friend.
"It's truly one of the greatest honors of my life to be able to talk about somebody who served his country so passionately and had been so dedicated to policies of this nation", Fitzgerald said Monday, via Josh Weinfuss of ESPN.
Mr Trump's statement broke his silence about the senator's death, with his remembrance restricted to a tweet sending condolences to Mr McCain's family. The flag was returned to half-staff later in the day.
Since taking office, the enmity between the president and McCain has been well documented. "But it is clear that the summit in Helsinki was a tragic mistake". South Carolina's senior senator said he's following the lead of McCain, who said after losing the 2008 election to Barack Obama, "He's my president now". The tributes singled out McCain's military service and heroism as a POW and his independence as a political leader.
"It is not about McCain, there are a lot of others like him and they, to a large extent, set the tone in modern day United States". "He devoted his entire life to his country. Our respectful thoughts go to his beloved ones".
Mr. Trump's initial silence about Mr. McCain underscored the isolation of the US leader and fueled criticism that he is incapable of bringing a divided nation together even as it mourns a man widely seen as an American hero and a political icon.
McCain's death could give Trump even greater leverage over a rightward-tilting Republican party as he fights for his political life against the Russian Federation meddling and obstruction investigations.