Field sobriety tests are only issued once the officer has probable cause based on suspicion of intoxication. I don't think anyone would disagree that suspicious behavior within an airport warrants detainment and questioning, but in that case no one's liberties are being compromised.

And in some cases, suspicious behavior has included:

* reading math textbooks while Indian

* wearing a turban

* praying

* talking to spouses in a non-English language

and worse.

So I guess we just disagree on the definition of "suspicious behavior".

Terry v Ohio makes pretty clear the criterion for detaining someone against their will. Too bad all of our rights go out of the window at airports.