All foreigners travelling in the US, (legally), are classified as NON-IMMIGRATE ALIENS. As such you are required to have been registered with the ATF and have the papers to say so. Legally, a NON-IMMIGRATE ALIEN, cannot be in posession of a firearm, or it's componets without this paper work from the ATF. The individual fireams and componets must be registered with ATF before entry. Form ATF (6NA) Revised August 2011, must be filled out and Faxed or sent to the ATF headquarters in Virginia. The form is very easy to fill out and amunition is listed in broad terms. Wait time is about 5 days to 6 weeks for approval, providing you have fill the form out correctly. One last thing, you must have a blanket invite from NBRSA, which is available through their business office, or a hunting licence from the state you are going to. This form does not legally allow you to transport a firearm from Ontario to Alberta through the US. Just as an off note, I have been traveling to the US for 35 years and have not had any problems, providing the paper work was done. Now I know there will be people who will scream and holler that this is an infridgment on their rights, but try and use that argument at 4 oclock in the morning in Detroit to the local Police who is just finishing his shift of being shot at by some local hood. Just do the paper work!!!!!