Originally Posted by
nacho
I think their main concern for Europeans are illegal work/study - or going to the US to find work and then stay. Most of the time they will ask why we are coming - and when we said it's for leisure or sightseeing, no problem.
Yes, that summarizes it well for most.
It's why I suggest the OP and his SO go to CBP passport control together even as they should have separate declaration forms. It looks more touristy.