McCain was one of Trump's sharpest critics, and made clear in one of his final wishes as he struggled with brain cancer that he did not want the president to attend his funeral.
The two repeatedly butted heads after Trump entered politics.. On Instagram he posted a photo of himself offering condolences to the McCain family, but wrote nothing about the Senator himself. His death had sparked an outpouring of tributes from across the political spectrum, except at 1600 Pennsylvania Avenue, where President Donald Trump has yet to utter a word about McCain since his passing.
U.S. Flag Code states that flags be lowered "on the day of death and the following day for a Member of Congress".
Meanwhile, Trump rejected his aides' recommendation to issue a statement praising the late Arizona senator, The Washington Post reported Sunday.
He will lie in state at Arizona's capitol on Wednesday, before a public viewing Friday at the Rotunda of the US Capitol, an honor reserved for the likes of John F. Kennedy, Ronald Reagan and civil rights champion Rosa Parks. McCain will be buried at the U.S. Naval Academy in Annapolis, Maryland, on Sunday. John McCain's funerals or memorials - but Vice President Pence will, a spokesman for the McCain family confirmed Monday.
Throughout Trump's presidency, McCain did not hesitate to speak candidly about policy differences with Trump, including the president's friendly posture toward Russian President Vladimir Putin.
Former presidents George W. Bush and Barack Obama - a Republican and a Democrat - have been asked to deliver eulogies. Trump also has refused to issue a presidential proclamation for McCain, which would be typical when a man of McCain's stature passes.