PASSPORT REQUIREMENTS
http://travel.state.gov/passport/passport_1738.html
ENTERING CANADA
Information for U.S. Citizens and Permanent Residents
Information for Non-U.S. Citizens
MONTREAL CONVENTION AND VISITORS ASSOCIATION
http://www.tourisme-montreal.org/
U.S. Citizens and Permanent Residents
U.S. citizens and permanent residents don't need a visa to enter Canada. Instead, they can travel directly to Canada and present proof of their status in the U.S.
For citizens, acceptable documents include passports, birth certificates, and naturalization certificates plus photo IDs. For permanent residents, bring your green card with you.
Visit Citizenship and Immigration Canada and the Canada Border Services Agency for more information.
However, you'll probably still need a passport to get back in the U.S. With a new law called the Western Hemisphere Travel Initiative, it's no longer enough just to show a driver's license or birth certificate at the border.
If you're returning to the U.S. by air, you'll need to present a passport or other special document. Starting June 1, the same rule will apply to re-entry by land or sea as well. See www.getyouhome.gov for details.
All visitors to Canada must have a valid travel document, such as a passport.
But a passport or similar document isn't enough for some visitors. Canada requires visitors from some countries to apply for a temporary resident visa as well.
Consult the list of countries whose citizens need visas. If your country's on it, you'll need to apply for a visa.
At the Citizenship and Immigration Canada site, you'll also find answers to frequently asked questions.
Be sure to leave enough time for your visa to be processed. If your application is being processed at a visa office outside Canada for visa applications.
Do you need a letter of invitation to the convention for purposes of obtaining a Canadian visa or applying for funding to attend? Contact the SMT office (vlong@uchicago.edu).
Bringing your children with you? Children under 16 need valid identification to enter Canada.
The U.S. requires children no matter how young to have passports if they're re-entering the country by air. For children under 16 returning via land or sea, an original or duplicate birth certificate or other proof of citizenship is sufficient.