In the massage world, the LE check is when she says "get comfortable" or "disrobe to your level of comfort" and leaves the room for three minutes. If she comes back and you're nude without a towel over your ass, she's more comfortable that you're not LE.
It might be something that varies by jurisdiction, or if there have been recent changes to the laws, but around here the powers that be have declined to prosecute many arrested individuals because it came out the dicks, I mean detectives, had exposed themselves during the sting. Cases have fallen apart because they got nude, much less actually had sex.
Honestly, I don't think LE cares. They have their fun ruining lives, arresting people and getting their faces in the paper. What does LE care if they actually go to prison or not? The splashy news about the arrests is all they need to get their funding.
So yeah, screening is more important.
This conversation reminds me of a lady who saw me about to lay the donation on a table and said "you can hand it to me, I'm not a cop." My instinct was to get out of there and leave nothing behind me but a trail of smoke and a fearghas-shaped hole in the door. I decided to stay and had a pretty good time.