What does in mean when I read in a review the gal did a LE check, after arriving but before starting the session?

Your Johnson before entering the hotel room is an LE check. 🤦🏽‍♀️

She wanted to make sure you're not a cop.

So what is it she does to determine that? Just want to know what to expect. Thanks.

An LE check can range from having you undress, or begin to undress first, or possibly mutual groping. The theory being that an actual law enforcement officer won’t expose himself or engage in sexual touching. Once you pass the LE check, then money can be safely exchanged and the session begins.

LE can show their dick to you, or you can drop your panties, it don't matter.

an urban legend or an old wive's tale or just misinformation, but here's what it's referring to:

This is about as effective as asking the provider in the message exchange if she is a cop. Cops can and do lie to arrest you and they can legally tell you they are not a cop. Asking this question protects you from nothing. Same with the "LE check". In some jurisdictions it is common for LE to touch/fondle the sex worker OR client before arresting them for "evidence", so this also provides zero legal protection. If you decide to play in the mud puddles don't be surprised if you get very dirty in the process.  It is par for the course.

In more detail, what to expect. One variation.
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You will be invited to step inside the door. (No $ yet.)
The hostess will ask you to unzip and show her your penis (all the way, just a little peek-a-boo ... doesn't matter).
(Still no $. Just having a little fun, right?)
The hostess will drop down and provide a brief lick or suck.
(Still no $.)
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There is a FALSE belief that LE are not allowed to cooperate with such advances.  
Or that by cooperating it is entrapment.  
Or who knows what.
LE can go ALL THE WAY and then -- before or after the cleanup shower or even tying their shoes -- announce that they are LE.
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For you, it is just a little tease.  
For your hostess, it is an unreliable LE check so it also just a little tease.
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If YOU are being lured into an LE trap, the cops will be on you before the door even clicks shut. You'll be on the floor, underneath 600 pounds of cops and another couple of guys pointing guns at you and shouting "Show us your hands! Show us your hands! Do not move! Show us your hands!" (to make sure you aren't holding a weapon).

…first thing I researched when I started this hobby.

That's not the real reason. LE can do it, but they would have to publicly testify under oath and their coworkers would know plus the paper trail. Many LE are married guys and nope out of that, and even most of the unmarried ones are just doing their job and simply don't want to do more work than necessary. It is a numbers game, they are going to approach a ton of women and don't expect or even want to net all of them.

Which was renowned for doing the LE Check where the girl who greeted you would unzip your fly and briefly suck your dick. I went there once just to see if it would happen, but got zilch.
Anyway, those above who say if gives zero LE protection are spot on correct. Cops will and do lie.

Well damn ive been in the wrong profession

Can LE post ads with photos that show nipple or genitals?

Not an attorney, but I think It opens up the potential for an entrapment defense.

It is wild to see you trying to defend this absolutely ridiculous nonsense.  "Just doing their job" is the most ridiculous excuse there is. And also considering the vast majority of stings are focused on arresting clients and not sex workers now, you still going to feel the same way if they slap the hand cuffs on YOU?  
And I actually have clients that are LE. You are giving police WAY more credit for this nonsense than they deserve. There was a lot of these dirt balls that volunteered to be part of these stings so they could see attractive women in skimpy outfits and if they are lucky get a handy or even a blowie!!! (Completely legal as well and using YOUR tax payer dollars, fyi). The pushback was from the communities who rightfully called these stings slimy and grotesque, so now most stings are focused on illegals (ICE related) or the underage stings. So no, there are no police approaching a "ton of women" trying to net as many as possible, this is no longer 1988. Seldom, if ever, is these going to trial. The vast majority are going to plead out and just pay the fine and move on. Police do not need to interject themselves into the lives of consenting adults, that should never be a part of "just doing their job". I do pay taxes, but for sure not to support this bull shit.

Agreed.  Some LE have actually had sex for money, but 99% will NOT.  Can you imagine the public backlash against an elected official/Commonwealth state district attorney/sheriff/police commissioner authorizing such actions.  That person would not be in office very long.  The cost would most certainly outweigh any benefit.  

No, that is incorrect. It is not considered entrapment because the client is actively looking for a sex worker. It is only considered entrapment if it can be argued that the police actually talked the person into partaking of the activity and there is nothing to show the person would have engaged in the activity if it were not for the police involvement encouraging them. If the client is already looking at ads and responding to the ads and inquiring about the services that is not considered entrapment regardless of what is in the ad.

I'm not defending anything, only explaining their POV. They are just doing their jobs, hence they tend to do it half-heartedly and the easy way. That was my only point. I don't agree with them enforcing this law at all in fact. You need to learn how to read.

Exactly. Many LE go through the motions because they have to. The same way on the freeway they'll stop someone for a violation, but just give a warning sometimes. Especially if they sympathize with the drivers' explanation in context. Or actually give a ticket but don't show up. People don't understand that most LE want an easy job. They are sometimes customers too. In some jurisdictions there is no mandate to enforce anything so LE are even welcome customers.

It just means that the reviewer saw one of the dumbest fucking providers on the planet, and if he bought into the idea that he or she were somehow protected by this gesture, then he is a newbie. Anybody that has been a monger for more than a few sessions knows this whole LE-check scene is just theatre and means nothing.

Sorry I embarrassed you! The only thing you "explained" were personal opinions, which you are entitled to, but your comments were lacking anything factual. I have been in this industry for a long time and have extensive knowledge of how the legal system works in the US in regards to sex work. If you have any questions please reach out. I want to make sure everyone has the information they need to navigate this industry safely, even you!!  

So if an undercover female cop comes up to me in a parking lot while I am reading the Bible, offers to suck me off for 20 bucks, I say, “Sure, why not,”I hand her a 20 and two meathead cops appear out of a van, pull me out and cuff me, can that be entrapment?

Yes.

You're correct. Entrapment is often misunderstood.

I'm pretty sure there were stories of cops having sex with a provider and then arresting them for prostitution right after finishing up.

Yep, you are correct!! And in some states it is still 100% legal for them to do so.

back in the CL days, I saw a rare post for a town I was going thru on my way to the cabin for opening deer hunting.  She said she had incall and the pics were almost unbelievable but turned out to be true.  Little brunette spinner around 20 years old.  Very green as well.  When I got into town she said her friend was there visiting but could go for a car ride or she could sneak me into the basement from around back.  I chose the car ride.  I was cold and she had about 3 layers on.  She asked me if I was a cop, which I said no, lol then asked her if she was.  She said no.

Cause real LE don't embarrass that easily.  

https://www.youtube.com/watch?v=C8zhdD3mJeU