The two singers recently arrived at LAX to visit their bandmate Robbie Williams at his mansion in LA but they were stopped in their tracks when they were asked why they didn't have a working visa.
The boys then had to try and tell the officials that they were not there to work. However Howard, 42, caused a scene when he accidentally jumped the queue.
A source said to UK newspaper The Sun: 'He thought someone called 'first class' as they approached security. The customs officer actually said 'Air France'.'
However they were later let through and were allowed into the country.