When you enter Canada, a Canada Border Services Agency officer may ask to see your passport and a valid visa, if one is necessary. If you are a citizen of the United States over the age of 16, you will need a Passport, a Passport Card or Enhanced Driver's Licence (only issued by certain states) to enter Canada. If you are travelling by air, you are required to have a passport, regardless of age.
As of March 15, 2016, visa-exempt foreign nationals who fly to or transit through Canada, will need an Electronic Travel Authorization (eTA). Exceptions include U.S. citizens and travellers with a valid visa.
Inadmissibility: You may be deemed inadmissible to Canada (not allowed to enter the country) by the Border Services Officer for a number of reasons. Reasons for inadmissibility include involvement in criminal activity (which may include impaired driving convictions), human rights violations, organized crime, etc.
For further information about documentation required and border procedures please visit the Canada Border Services Agency’s website.