He sang a few words as Georgia's Zac Brown Band and a gospel choir performed the anthem.
"Trump being down on the field, walking out with the troops, singing along with the National Anthem with such pride, is the very definition of Pro-America".
US President Donald Trump struggling with the words to the national anthem, which he praised so much, seems to provoke a spate of comments ridiculing the president.
This is the President of the #United States that we're talking about. Others pointed out how the president had railed against football players failing to respect the national anthem. Unlike the NFL, nearly no college football teams take the field until after the national anthem, according to The Associated Press.
ATLANTA, GA - JANUARY 08: U.S. President Donald Trump on field during the national anthem prior to the CFP National Championship presented by AT&T between the Georgia Bulldogs and the Alabama Crimson Tide.
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However, he appeared to have trouble remembering the words himself.
Mr Trump's supporters said they were proud to see him standing with his hand over his heart, while his critics said it looked as though he had forgotten the lyrics. He has publicly blasted several players previous year for not respecting the anthem or the flag. "Singing along wouldn't be easy for him", he tweeted.
The White House has vehemently denied these claims, and the president took to Twitter to personally defend his mental health in a string of now infamous tweets. He also repeated his criticism of the NFL players who kneel during the national anthem in protest of police brutality and racial inequality.
Several Twitter users believed the footage was evidence that Trump doesn't actually know the lyrics to the National Anthem. In October 2017, he had also asked Vice President Mike Pence to leave an Indianapolis Colts game early after the players knelt during the National Anthem.