He still made the best of his tournament debut.
Earlier this month, it wasn't clear whether Hussein would be able to compete in the tournament after he and another member of the team's travelling party were detained for several hours coming through US customs in Chicago.
Two weeks later, Hussein scored the second World Cup goal in his country's history during Iraq's 4-1 loss to Norway on Tuesday (Wednesday AEST).
Hussein also had a late own-goal, but Iraq coach Graham Arnold took only positives out of his star's effort.
"I'd rather remember his performance and the way he's played," former Australia boss Arnold said.
"He's had quite a few injures during the season. For him to get through 90 minutes ... He's the type of player that's very difficult to control in the box. I'm very proud of him."
Norway took a 1-0 lead in the 29th minute through Erling Haaland.
Nine minutes later, Hussein energised a sizeable contingent of white-clad Iraqi fans amid a sea of Norwegian red at Gillette Stadium.
Amir Alammari corralled a ball on the baseline halfway between the left corner and the goal and fired a cross. It eluded Norway's defenders, allowing Hussein to punch a clean header that bounced under the hand of diving goalkeeper Orjan Nyland.
Iraq are playing in their second World Cup and first in 40 years.
Hussein appeared deflated as he shook hands with Norway's players afterwards, but his teammates were proud of the lift — however momentary — his goal provided to a team that came in as a heavy underdog.
"It's a proud moment for him," defender Hussein Ali said.
"But, of course, the end result, it's hard to celebrate a goal like that. But we're on to the next game."
Setting aside Hussein's difficulties in customs, Arnold said the team's experience leading up to the match had been positive.
"FIFA, even the US, it's not about politics — it's about football," he said.
"The way we've been treated has been first class."
Arnold, who led the Socceroos to and at the 2022 World Cup in Qatar, said his team's efforts bodes well heading into the next match against France in Philadelphia.
"I was very proud of the first 65-70 minutes," Arnold said.
"A couple of mistakes of players this type of level will always punish you. So we need to learn lessons from these mistakes."
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