I recently have been looking for information and reading many threads on people with trailers having to have their TRAILERS inspected (whether boat or utility) I have also heard that law enforcement is cracking down on this lawhard as of lately, especially since it's obviously not a common law everyone knows about. Found a link that might help anyone
http://www.50statelegalforms.com/files/form1/form13072.pdf
Any information or input about this topic would help and maybe give everyone out there a heads up on this unspoken law.