In this March 26, 2019, file photo, an airline passenger walk in the arrivals terminal at Dulles International Airport in Dulles, Va. Newly documents filed in a federal lawsuit claim that U.S. government searches of phones and laptops at airports are on the rise and are being conducted for reasons beyond immigration and customs enforcement. There were 33,295 searches in fiscal 2018. (AP Photo/Cliff Owen, File)
WASHINGTON U.S. government searches of travelers cellphones and laptops at airports and border crossings nearly quadrupled since 2015 and were being done for reasons beyond customs and immigration enforcement, according to papers filed Tuesday in a federal lawsuit that claims scouring the electronic devices without a warrant is unconstitutional.