France’s research minister said the scientist was traveling to Houston for a conference when his phone was searched
France’s research minister said a French scientist was denied entry to the US this month after immigration officers at an airport searched his phone and found messages in which he had expressed criticism of the Trump administration.
These guys are handing their phones over to show work itinerary in their emails amd the immigration officers are then going through all their other emails and messages.
Never, never, never, hand your unlocked phone over to an immigration officer. Print everything you need out before hand.