I've been offered free access to the 'Global Entry' program as part of my job, but I've been wary because don't want the side-effects of the "rigorous backgroun

I've been offered free access to the 'Global Entry' program as part of my job, but I've been wary because don't want the side-effects of the "rigorous background check". As a green-card holder I'm already pretty wary of them being able to search my devices or deny me entry, and I'd rather that the CBP hadn't enriched all my identifiers and got a fat-little-file on me beforehand. Given an interest in debating politics online, I wouldn't be surprised if GE membership would increase the chances that I get stopped regularly. Does anyone on HN have any knowledge or experiences about what kind of thing goes into the GE "rigorous background check"?