Originally Posted by
zoombee
There may be a difference in impact if you are vs aren't a US citizen. As a non-US citizen, there was clear impact. I had secondary screening on the majority of my trips to the US after a trip to Pakistan. Added ~30 mins to getting through immigration, and I'm pretty sure I got the full baggage screening from customs once or twice just for this reason too. It stopped about a year later.
Yes, that's true - good point. Now that I think about it, they did ask me about Pakistan on another entry several months later. Ironically, it was when I was coming back from vacation - strange since I often come back from places like Pakistan, Iraq, West Africa, etc. and am rarely questioned then!