If you exercise your right to travel, will the US government use your past travel as the basis for denying you the right to travel in the future?
Reading between the lines of the redacted public versions of recent filings in one of the ongoing legal challenges to US government no-fly orders, the answer appears to be, “Yes”.
Merely having visited the “wrong” place at the “wrong” time (as subsequently and secretly determined by the precogs who devise the government’s algorithms for predicting future terrorist behavior) can be sufficient to get you put on the no-fly list.
Did you visit Yemen in 2009? Now you might be on the no-fly list — for that reason, and maybe that alone.