Is there something more to the story? I travel with laptops and iPads all the time. Never been stopped.
E: The transparency page might be of interest to you: https://cock.li/transparency/
Or possibly you'd want to hear about the time the servers got seized: https://news.ycombinator.com/item?id=10774152 && https://news.ycombinator.com/item?id=10912524
[1]: https://cock.li/transparency/2016-09-22-subpoena/call-2.ogg
Start working on Tor, LavaBit, Wikileaks or any other technology initiative the Government sees as a risk, and see what happens. Alternatively you could also start acting as a publisher of leaked Government documents.
>"The Tor Project included the U.S. International Broadcasting Bureau" >"As of 2012, 80% of The Tor Project's $2 million annual budget came from the United States government, with the U.S. State Department, the Broadcasting Board of Governors, and the National Science Foundation as major contributors" [from wikipedia]
If you are in the US State Dept. and were associated with Tor do you get stopped at the border because of that?
The next step will be to mark NGOs as having 'foreign influence'. Pretty soon RT'ing Amnesty International or the EFF will exclude you from government or sub-contractor employment. Just look at what happens in Russia.