Sen. John McCain is lying in state in the U.S. Capitol Rotunda, where only 30 Americans have had the same honor.
"On behalf of The American Legion's two million wartime veterans, I strongly urge you to make an appropriate presidential proclamation noting Senator McCain's death and legacy of service to our nation, and that our nation's flag be half-staffed through his interment", Rohan said in the statement, which called McCain "an American hero and cherished member of The American Legion".
"The President asked me to be here on behalf of a grateful nation to pay a debt of honour and respect to a man who served our country throughout his life in uniform and in public office and it's my great honour to be here".
"I can assure you, America will always remember and honor the lifetime of service of United States Senator John McCain", Pence said.
Over the years, Trump, who did not serve in the military, has demeaned McCain's status as a former prisoner of war, implied he gave up information to his captors and mocked injuries he sustained as a prisoner.
This side eye Meghan McCain is giving Mike Pence.
More recently, Trump declined to mention McCain's name at a signing ceremony for a defense bill named in McCain's honor.
McCain died Saturday after being diagnosed past year with an aggressive form of brain cancer.
Saturday, McCain will be carried from the U.S. Capitol to the National Cathedral were a memorial service will be held to celebrate his.
Watch a livestream from the U.S. Capitol.
Later, Senate Minority Leader Charles Schumer, D-N.Y., and House Minority Leader Nancy Pelosi, D-Calif., joined McConnell, Ryan and Pence in laying wreathes next to McCain's casket.
"After the dinner, John, who was more than 20 years older than me, walked up, put his hand on my shoulder and said, 'Mike, we have a few more meetings tonight".