FIFA announced on Monday (AEST) that Balogun would be eligible to play for United States in Tuesday's (AEST) Round of 16 game against Belgium, a rare reversal of the prior one-game suspension he was facing after receiving a red card against Bosnia.

Trump praised the decision, writing on Truth Social it had reversed a "great injustice".

Balogun scored his third goal of the tournament in the 2-0 win over Bosnia but was shown a red card in the second half for planting his boot into the ankle of Tarik Muharemovic, leaving United States to navigate the remainder of the game a man down.

The 25-year-old was sent off after a video assistant referee (VAR) review, with United States coach Mauricio Pochettino saying it was never a sending-off, but FIFA is allowing him to play – without rescinding the red card.

"In line with article 27 of the FIFA Disciplinary Code, the implementation of the match suspension is suspended for a probationary period of one year," a FIFA statement read.

"If Folarin Balogun commits another infringement of a similar nature and gravity during the probationary period, the suspension shall be revoked and the sanction enforced without prejudice to any additional sanction imposed for the new infringement."

The judicial body has the discretion to suspend the implementation of a disciplinary sanction fully or partially.

US Soccer accepted the decision.

"[We] are pleased that Folarin Balogun is eligible to compete tomorrow," a statement fromt he governing body read.

Balogun's team-mates said they only found out via social media on their way to training.

"We found out about it just coming over here," American forward Christian Pulisic said.

"At first, you're like, 'Oh really, is this real?' And then 'Oh, this is great news'."

The Royal Belgian Football Association (RBFA) said it was "astonished" by FIFA's decision to declare Balogun eligible to play in the match, pointing to the rule book while it investigated all potential options.

"FIFA bases its decision on Article 27 of the FIFA Disciplinary Code. This provision states that the FIFA Disciplinary Committee may decide to suspend the enforcement of a previously imposed disciplinary sanction," a statement from the RBFA read.

"However, Article 66.4 of the same FIFA Disciplinary Code clearly provides that a red card [sending-off] automatically results in a suspension for the team's next match, as has been the case for all previous red cards issued during this FIFA World Cup."

It believes the decision was in direct contradiction with the provisions of the tournament's regulations.

"As set out in Article 10.5: 'If a player or team official is sent off as a result of a direct or indirect red card (second caution), they will automatically be suspended from their team's subsequent match,'" the RBFA statement added.

Portugal captain Cristiano Ronaldo was able to play his side's opening FIFA World Cup matches after FIFA suspended the final two games of a three-match ban last year when he was sent off in its penultimate qualifying match against Republic of Ireland.

Qatar midfielder Assim Madibo was handed a five-match ban after receiving a red card for a tackle that seriously injured Canada midfielder Ismael Kone during a group match at the tournament.

In 1962, Brazil great Garrincha was sent off in the semi-final but he was cleared to play the final after a successful appeal backed by Chile fans and President Jorge Alessandri, helping his side beat Czechoslovakia 3-1.