A notable shift in atmosphere occurred at the iconic Azteca Stadium in Mexico City during the opening ceremony of the World Cup 2026, as the United States flag was paraded onto the pitch. The celebratory mood, which had greeted the flags of other participating nations, appeared to turn to loud boos and jeers from sections of the crowd when the US flag was displayed on the stadium's large screens and carried onto the field.
The incident took place ahead of the tournament's inaugural match between co-hosts Mexico and South Africa. As part of the pre-game festivities, the flags of all 48 nations competing in this summer's expanded World Cup were presented to the audience. The flags of the three North American co-hosts – the United States, Canada, and Mexico – were the final ones to be introduced.
While Canada's flag was met with a generally positive reception, the introduction of the United States' flag marked a distinct change in the crowd's reaction. Jubilant roars quickly subsided, replaced by audible jeering. The atmosphere swiftly shifted back to cheers as attention then turned to the Mexican flag, which received an enthusiastic welcome from the home crowd before their team's kick-off.
The United States is set to host a significant portion of the tournament, with 78 of the 104 matches scheduled to be played on American soil. This figure is three times greater than the combined number of games to be held in Mexico and Canada. The allocation of matches has been a point of discussion in the lead-up to the 48-team tournament.
The build-up to the World Cup has not been without its controversies, some of which have involved the United States and its political landscape. Notably, the US launched strikes against Iran, one of the participating teams, in February, a development that may have contributed to underlying tensions. Furthermore, FIFA President Gianni Infantino was also met with louder boos when he was shown on the big screen during the match, indicating broader discontent among some sections of the crowd.