Well, I wasn't successfull in importing my Honda from Canada to the US. Basically, the bike need to be certified that it conform to US security and emission laws, and either Honda can do that or a certified importer.
The former (Honda) is really not helpful, canadian and american custumer services throwing the ball to each other (can. side cannot certify on US laws, and US side cannot comment on can. motorcycle). This is very deceiving from Honda. I imported a car (NOT a Honda) when moving in, an the manifacturer just gave me a letter stating that the speedmeter and other basic thing needed attentions.
The latter are not really interested by this business, to much trouble for what I am willing to pay (certainly not 4000USD for a new certification).
So what option do I have? I will drive back my loved 919 to Canada, and sell it there (any interested, 15K km 2003, like new, will sell in Quebec as soon as the weather allows the drive up north). Then buy a new motorcycle in the US. I would love a Honda, but I don't want to get trough all this again.
Anybody tried those new Ducati Sport 1000? Anyway, dealer will need to provide certifications for both Canada and US!!!
Thanks for all your comments, if anybody find a trick in the next few months, please leave a message here.