His widow, Cindy McCain, placed a ceremonial wreath there.
McCain is to be buried Sunday at his alma mater, the U.S. Naval Academy, next to his best friend from the Class of 1958, Adm.
Vice President Mike Pence also offered his condolences and memories.
Why Mr Trump is so anti-Muslim so openly is a question to be taken seriously. "I've made it clear that we as a country can not tolerate political censorship, blacklisting, and rigged search results".
"The America of John McCain is generous and welcoming and bold", she said. McCain's former colleagues looked on. "He just relished the fight". But I said, in the end it's OK, because at least Canada knows how I feel.
Senator Lindsey Graham, who is close to Trump and a defender of Sessions, said last week he believed Trump would appoint a new attorney general but should wait until the elections, in which Republicans are seeking to maintain control of both the House of Representatives and Senate. Lindsey Graham. While in the chamber, Cindy McCain sat in her husband's chair. Lindsey Graham at her side in the semi-darkened Senate.
Mourners gather for Arizona church service for McCain
I'm confident his legacy of devotion and to the common good will continue to inspire people around the world long after today. A few firefighters saluted from atop a fire engine parked on an overpass as the motorcade passed underneath on Interstate 17.
Donnelly recently released an ad that showed the president thanking him as Trump signed "Right to Try" legislation.
Arizona residents have been invited to honor Sen.
McCain's hearse arrived at the cathedral shortly before 9:30. John McCain, who died on Saturday, would have been a better president than Barack Obama. John McCain - a near-constant target in Trump campaign rallies - whose casket was flown back to Washington as Trump traveled to Indiana.
Other officials represented the administration in Trump's hard-to-miss absence. Joe Lieberman, considered by McCain as a running mate in 2008.
The Irish have not taken well to the news that Donald Trump is set to visit them. McCain, a naval aviator, was shot down during the Vietnam War and spent 5 1/2 years as a POW.
Trump obtained deferments during the Vietnam War for his college education and then for bone spurs in his heels. And he only marked McCain's passing on August 25 with traditional presidential actions after he came under fire from the American Legion.
None of the speakers at the North Phoenix Baptist Church on Thursday uttered Trump's name.
President Donald Trump is urging Indiana Republicans to unseat Sen. He talked about McCain's character and how he parted company with those who "lacked the basic values of decency and respect, knowing this project is bigger than yourself".
Bush described McCain as someone whose moral compass rejected the abuse of power in all its forms.