bought my boat in Canada back in 2002. No problems, just a sh!t load of traffic comin back into the US. Make sure your paperwork is in order and look in all the nooks and crannies for contraband. I heard a story of a guy who bought a boat in Canada couple years back, and was visited in the states by the dea. they got a tip, they knew he had no clue. but the boat was seized and tied up for months.