https://www.theregister.co.uk/2019/11/12/cbp_device_searches/

The seizure and search of phones and laptops at the US border is unconstitutional, a judge said Tuesday in a landmark ruling.

Massachusetts district court judge Denise Casper declared [PDF] that the practice breaks the Fourth Amendment on unreasonable search, and that border agents need to have a “reasonable suspicion” of illegal activity before they can search electronic devices.