Originally Posted by
sethb
As you wrote, they're different people. Sure, they both work for the Federal Government (exactly how far up the chain you have to go before it's "the same genre" doesn't matter). But they're separate people, working at separate desks, doing different jobs.
One of them looks at my passport and maybe asks me questions about my travels; the other looks at my stuff declaration card and maybe asks me questions about stuff.
The last time I entered the USA with GE kiosks down, the passport guy asked me about stuff I had with me. He scribbled something that forced me to go to secondary/ag/Xray, but of course didn't have the decency to say so, which meant that I stood in the exit customs line, only to be sent to secondary and then back to the exit line.