US Citizen Asked By Border Patrol to Give Social Media Usernames/accounts When Re-Entering USA From Abroad at LAX! Common, Legal practice. A reddit post on their legal forum says this is legal.  Not only can they ask, if you refuse to answer they can legally detain you, seize your phone, retain your phone for months and open a further investigation into you at the airport causing you a lengthy delay in processing.   Here is the Rediit post: https://www.reddit.com/r/legaladvice/comments/cyr3g3/i_am_an_american_citizen_yesterday_at_lax_i_was/ Here is a Fortune news piece about this:   https://fortune.com/2017/02/08/social-media-at-the-border-can-agents-ask-for-your-facebook-feed/amp/ This suggests you might wipe your phone clean of all accounts or take a burner phone over seas, instead of your normal smart phone.  But it suggests this too may trigger a further investigation into you being opened before you can enter the country.   It adds: an appeals court in California has already shrunk the border exemption a little bit by saying agents must get a warrant if they want to do a forensic search of a traveler’s device. But the court also found a more basic search, presumably including a glance at a phone and its social media accounts, is okay. And says that this will become more common place when reentering the country due to Trump's desire for more stringent immigration enforcement.  I do not see how the comings and goings of any American citizen falls under anything to do with immigration.  With the FBI memo naming Q anon a terrorist threat, what would you do if thy asked for your social media usernames/ accounts?