Top 7 Reasons You May be Denied Entry to the United States Grounds for Inadmissibility The ability to travel to the United States is not an automatic right—not even for Canadians!  You may be denied entry to the United States for one of the following reasons: Criminal Inadmissibility – You have a criminal record that makes you inadmissible to the United States. Convictions such as common assault, mischief, and DUI are normally not of concern. However, Crimes of Moral Turpitude (crimes of dishonesty and crimes of violence where harm was intended) and Drug Offences will almost always make you inadmissible. [...]