You need to watch more mindless courtroom procedurals on TV.  

Entrapment involves inducing someone to do something they would not have otherwise done generally by implanting the idea of commiting the crime in the person's mind.  It's a tough defense to rely on.

The govt. didn't give you the idea of browsing on an escort website.  You went there with the intention of committing the crime.  

Do a search on this board and you'll find much more info.

The way to steer clear of LE is to do your homework with the tools on TER.