Iran were knocked out of the World Cup after drawing all three of their group games which saw them finish 3rd but be knocked out thanks to Algeria and Austria drawing 3-3 on Sunday.
Due to the ongoing conflict, Iran faced a number of issues in the US during the tournament which included training base was switched from Arizona to Tijuana in Mexico before the World Cup began as well as their constant travel restrictions.
Coach Amir Ghalenoei said his team were the "most oppressed” at the competition as the constant drama surrounding the side affected them on the pitch.
With all three of Iran’s group-stage games in the United States, the side faced several issues that made their tournament a disaster from the start.
Now, speaking after Iran were knocked out the competition, Mullin revealed that he was happy to see them depart:
"I'm just glad they're done, and they're not coming back.
"I was so happy when we were able to pull their visas and said they could leave the US soil, and I might've sung a song or two or maybe even danced a happy dance."
"There wasn't a single team that we had to spend more time dealing with than Iran."
Mullin has faced backlash for his comments on social media as fans reacted to comments they believed to be unprofessional for a figure in government.