Ex-FIFA boss Sepp Blatter joins politicians, football experts calling on fans not to travel to US for 2026 World Cup. President Donald Trump has been present at all big events and news announcements in the lead up to the FIFA World Cup 2026, which the US is cohosting with Canada and Mexico [File: Jacquelyn Martin/AP Photo] Former FIFA chief Sepp Blatter has backed a proposed fan boycott of World Cup 2026 matches in the United States because of the conduct of President Donald