[QUOTE=sn1ke;20680166 but the agent questioning me (who took over from the first agent after 2 questions) didn't seem to like me, and had a major chip on her shoulder (which became more obvious with a run-in at the gate with her).[/QUOTE]
As you or someone stated earlier they are trained in body language. YOUR feeling that she had a chip on her shoulder, showed to her. BUT, she may not have known the why to your attitude--so she questioned and questioned to determine it. As a retired educator, NOT trained in body language, it only takes experience to spot the student who doesn't like me. They are usually very verbal in their non-verbal expressions and actions. Sorry to say but you probably brought the more thorough check upon yourself.