Did Mr. CHiP quote a statute? Did he put out an official memo? Did we get the name and address of Mr. CHiP so he can come and defend you when you get a ticket?
I suspect not. The problem is you are in a gray area. If you read the websites that sell these, they do a lot of implying that you will be fine but are very careful not to claim they are legal.
As someone else said, odds are as long as you keep your nose clean, they very likely won't make an issue of it. If they have reason to pull you over, they may decide it's a trailer. Even if you win, you still have to take it to court and pay the court costs and lose that time.
You takes your chances.
