The US has had travel advisories for specific people against China in effect since Jan 2018: https://travel.state.gov/content/travel/en/traveladvisories/travel

The US has had travel advisories for specific people against China in effect since Jan 2018: https://travel.state.gov/content/travel/en/traveladvisories/traveladvisories/china-travel-advisory.html https://travel.state.gov/content/travel/en/traveladvisories/... I've worked for years at companies that had corporate policy to either wash or destroy phones/computers taken into China. That is to say, it's unsurprising that any 2 countries engaged in a trade war (hot or cold) would take these precautions against each other.