A controversial red card, a phone call from President Trump, and a furious response from European soccer officials have turned a single World Cup foul into one of the biggest storylines of the tournament. FIFA, the organization that runs the World Cup, took the unusual step of lifting American striker Folarin Balogun's one-match suspension, clearing him to play in Monday's knockout-round match against Belgium in Seattle — even though he had been sent off with a red card just days earlier.

Here's what happened in simple terms: in soccer, a red card means an automatic ejection from the game and, normally, an automatic ban from the next match too — no appeals, no exceptions. Balogun, the top scorer for the U.S. men's team at this World Cup, received that red card last Wednesday for stepping on the ankle of a Bosnian opponent during a win in the round of 32. Under normal rules, that should have kept him out of the following game. Instead, FIFA announced Sunday that his ban would be put on hold for a year, essentially letting him play now with a warning hanging over his head.

What made the decision explosive is the timing: reports quickly surfaced that President Trump had personally called FIFA president Gianni Infantino to ask for the red card to be reviewed. Trump later thanked FIFA publicly for what he called reversing an injustice. The move immediately raised questions about whether a sitting U.S. president had influenced a decision inside global soccer's governing body, something that, before this, had happened only once in nearly 65 years of World Cup history.

The backlash from European soccer was swift and unusually blunt. UEFA, the organization overseeing soccer across Europe, accused FIFA of crossing a line and said the decision was impossible to understand or justify, warning that the credibility of the entire tournament was now at stake. Belgium's soccer federation said it was stunned by the reversal and is exploring an appeal, while former FIFA president Sepp Blatter — no stranger to controversy himself during his years running the organization — publicly said red cards shouldn't be undone by political phone calls, but by rules and independent review.

Adding fuel to the fire is the well-documented friendly relationship between Trump and Infantino. FIFA awarded Trump its first-ever "FIFA Peace Prize" late last year, and the two have appeared together at high-profile events throughout the tournament, which the U.S. is co-hosting with Mexico and Canada. Critics argue that closeness is exactly why a decision like this looks so troubling, regardless of whether Trump's call actually swayed the outcome.

For now, Balogun is free to take the field against Belgium, and U.S. coach Mauricio Pochettino has defended the ruling as fair given how the original red card affected his team. But with rival federations already questioning whether every other controversial card from this World Cup will now get the same treatment, this fight over one red card may end up shaping how fans see the fairness of the entire tournament.