FIFA appealed on Monday for "tolerance, mutual respect and common sense" after U.S. President Donald Trump denounced the annulment of a policy that required football players to stand during the national anthem.

"I won't be watching much anymore!" Trump tweeted on Saturday.

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Trump retweeted a tweet by Florida Republican Rep. Matt Gaetz, who wrote: "I'd rather the US not have a soccer team than have a soccer team that won't stand for the National Anthem."

United States captain Megan Rapinoe kneeling in support of Colin Kaepernick led to the U.S. Soccer Federation adopting the rule in 2017.

It was annulled last week after American soccer leaders acknowledged a change in sentiment among the public since the death of George Floyd sparked global anti-racism protests.

"FIFA strongly advocates for tolerance, mutual respect and common sense when such important matters are debated," world soccer's governing body said in a statement to The Associated Press when asked about Trump's comments.

"FIFA has a zero-tolerance approach to incidents of all forms of discrimination in football, as outlined in the FIFA Statutes. We must all say no to racism and no to violence."

FIFA President Gianni Infantino introduced Trump at a dinner at the World Economic Forum in Davos, Switzerland in January, expressing a desire to "make sure that the 'American dream' becomes reality, not only in America, as we have seen, but all over the world."

In response to Trump's tweet, FIFA said Infantino's "position on the player's rights to express themselves against racism, discrimination and violence was clearly stated two weeks ago and it has not changed."

Infantino signalled support for on-field protests after American midfielder Weston McKennie wore an armband while playing for Schalke in Germany with the handwritten message "Justice for George" around his left arm.