Foreigner with a USA Manufacturers' Statement of Origin
My understanding is that bike dealers will supply a MSO and Bill of Sale to the purchaser of a new bike. Most don't demand the purchaser registers the bike i.e. tax and tags it, in the State it's purchased. In most States the dealer will supply temp registration for at least 30 days if the purchaser buys insurance.
So, if a foreign national buys a new bike in the States, and rather than titles it (tax and tag), rides around for 30 days, then rides out of the country (Mexico, South America, etc), there's no problem?
Aren't the MSA and Bill of Sale ownerships docs for the purpose of borders?