I go to Canada 2 to 3 times a year. Sometimes for work and sometimes for hunting. If you go through customs and they ask if you have a felony against you , you had better tell the truth. After they ask they will check and if you have one, (DUI in Canada is a felony) you will get turned away. We were at the border to go through with our guns and one of my friends had a dui and I did not know it. He answered yes and they checked and because he answered yes he was allowed to go on hunting. He was told to contact the canadian authories when he decided to come back and that he could get a pardon if he went through the proper channels. Just obey the canadian laws and you will not have any problems.