FIFA President Gianni Infantino stands beside U.S. President Donald Trump with the World Cup trophy before presenting it to Spain after the final at New York New Jersey Stadium on July 19, 2026. | Dan Mullan/Getty ImagesIt would be a “terrible mistake” to replace the football boss after the success of the 2026 World Cup, the U.S. president posted on Truth Social. U.S. President Donald Trump backed under-pressure football chief Gianni Infantino, after calls grew for the FIFA boss to quit following his aborted plan to sell off parts of the World Cup tournament to private investors. “FIFA would be making a terrible mistake if, for any reason, they even considered replacing President Gianni Infantino. He is fantastic, having just presided over the most successful World Cup, by four times, ever presented,” Trump posted Tuesday morning on Truth Social.