Thousands of travellers waited in hours-long queues at US airports on Sunday amid increased spring travel and limited security personnel - who have been working without pay during a partial US government shutdown.
Photos show people standing in long queues at check points managed by the Department of Homeland Security (DHS) at airports in Houston and New Orleans.
The DHS has gone without funding since 14 February after Congress failed to reach an agreement. The Trump administration blamed delays on Democrats, who declined to pass funding without immigration reforms.
The delays come during a busy travel season as US students have their spring holidays from school.
Officers with the DHS' Transportation Security Administration (TSA) must keep working because they are considered essential workers for public safety, even though there is no money to pay them. It is likely they will receive back pay after the shutdown.
