Between canda and US, a dui should have no affect on going through.
2/16/2016 at 9:09 PM
Between canada and USA:
http://www.ezbordercrossing.com/the-inspection-experience/prior-criminal-offenses/crimes-that-will-make-you-inadmissible-to-the-u-s/
https://help.cbp.gov/.../entry-into-the-u.s.---canadian-with-criminal-recor...
As to what OP's actual crime is I have no idea but it comes down to whether it's a moral turpitude
Crimes of Moral Turpitude
The definition of moral turpitude is very broad so we are listing the most common examples of this type of crime below. The actual offenses are ever changing. Some of them may be minor such as shoplifting, while others can be very serious such as murder. The actual penalty for the conviction does not matter.
Passing Bad Cheques
Assault Causing Bodily Harm or With Intent to Cause Harm
Assault with a Weapon
Assault with intent to cause bodily harm
Aggravated Assault. “Aggravated felony” is even worse, though these also have a very loose definition, therefore the offences can change over time. However, there is absolutely no relief, and anyone deported or excluded for this reason cannot ever enter the US.
Sexual Assault
Theft
Burglary
Trespass with Intent to Commit a CIMT
Endangerment and Actual Injury
Child Abuse in some cases
Benefitting from illicit drug trafficking.
Prostitution and commercialized vice.
Involvement in serious criminal activity, where the person has asserted immunity from prosecution, departed the United States as a result, and not subsequently submitted to the jurisdiction of the relevant U.S. court.
Human trafficking, whether inside or outside the United States.
Laundering or aiding or abetting monetary instruments.