I came back into the US yesterday. The lines at JFK were nuts. Thankfully, with Global Entry, I was at the desk in about 5 minutes. However, I had spent more than my allottment in Paris (and I always claim becuase I do not want to fuck with my GE). Because of that, I had to go sit for a bit, once they had someone to walk me into the customs area, they waited for me to get my bags, and told me to meet them. I did. He then said, this is the rate you would pay, but I am not going to charge you.
There was no ask to see anything else. It was all pretty standard, and they were very nice to me.
That being said, I saw a couple being questioned, and from what I could hear from the conversation, they had more than 10k in cash on them (thus the reason they were being questioned). Other that were there in that waiting room were being called one at a time. I did not see any of them afterwards in the same customs area I went to (which is after baggage). Then again, I was the only white woman of the lot. That might have had something to do with it.
I hate to think the worst because everyone I dealt with was absolutely lovely to me (and I have learned to be very nice and respectful as well). But I was, understandably, nervous in a way I had never been before, even as a white woman.
I will say the line for Terminal 8 was longer than i had ever seen it. It was longer than the queue space.