The United States were routed 5-2 by Belgium on Saturday in a humbling defeat for Mauricio Pochettino's team as they prepare to co-host this summer's World Cup.
FSE accused FIFA of a "monumental betrayal" in December when tickets were put on general sale ranging from $140 for the cheapest group games to $8,680 for the final.
In a statement Thursday that did not mention Iran, FIFA president Gianni Infantino said soccer has a key role to "promote peace.
Iran will "boycott the United States" but "not the World Cup", Iranian football federation president Mehdi Taj said in a video.
A leading soccer official in Asia says Iran is still set to play at the World Cup which kicks off in June in the United States, Canada and Mexico.
The current round of conflict between Israel and the United States on one side and Iran on the other started on February 28.
With just over 100 days until the 2026 World Cup kicks off in the United States, Iran's place in the tournament has been thrown into uncertainty following US military strikes carried out alongside Israel.
Former FIFA president Sepp Blatter on Monday suggested he supports fans boycotting World Cup matches in the United States this year due to security concerns.
The final draw of the FIFA World Cup 2026 will take place on Friday at Washington, DC, the capital of co-hosts USA.
The United States scored their most impressive win of Mauricio Pochettino's reign with a 5-1 thrashing of Uruguay in an international friendly on Tuesday.
US President Donald Trump has indicated that the upcoming FIFA World Cup matches scheduled in Seattle could be moved to another city if security concerns arise due to what he called a "very liberal/communist mayor."
FIFA President Gianni Infantino has previously made clear that he sees US President Donald Trump as a champion of world peace.
The United States had already been announced by FIFA President Gianni Infantino as the sole bid for the expanded 48-team tournament.
Christian Pulisic, Antonee Robinson and Alejandro Zendejas all could miss the United States' friendly against Ecuador on Friday.
Son Heung-min scored one goal and set up another to spark South Korea's 2-0 victory over the United States in an international football friendly on Saturday.
A 77th-minute header from Mexico skipper Edson Alvarez completed a come-from-behind victory after a typically hard-fought tussle.
The United States wrapped up their CONCACAF Gold Cup group phase campaign with a nervy 2-1 victory over minnows Haiti in Texas on Sunday.
The breakthrough came when Sebastian Berhalter whipped in a free-kick from deep which, in a crowded box, Chris Richards met with a half-volley on the slide which flashed home.