First off, the question being asked is, "When going to the US, not to Canada. " With that being said, I have never been asked anything mechanical pertaining to the MH or a car or Motorcycle. In the past 10 years Ive crossed the border at least 500 times. The border guards are not there to enforce highway vehicle laws. They can call a trooper but have no jurisdiction on highway codes. I do agree that you need a braking system. Why don't you just drive the MH nd have your wife drive the car till you get the Brake Buddy.