Tech U.S. customs can seize your laptop or phone without a warrant. Advocates cry foul in court May 1, 2019 Edward C. Baig, USA TODAY Comments Off on U.S. customs can seize your laptop or phone without a warrant. Advocates cry foul in court The ACLU and EFF are trying to get a court to rule searches of phones and laptops at the U.S. border are unconstitutional.