Footage has emerged of protesters chanting in O'Hare airport, Chicago, USA as over a dozen people were held in detention over President Trump's new executive order on immigration.

The video, shot on Sunday, captures the moment the protesters cheers as a man appears to walk free from detention.

According to reports, many lawyers went to the airport to help the 16 people held in custody including children and an elderly woman.

All detainees were reportedly released by the end of the day.