Travel & Immigration Info:
Citizens or permanent residents of the United States can usually cross the border without difficulty or delay. However, both Canada and U.S. Immigration required certain types of identification. For native-born Americans and/or U.S. citizens, Canadian Immigration requires either a passport or a birth certificate, supported by photo I.D. For return entry, U.S. Immigration officials also suggest that you have one of these items with you, in addition to your normal identification. A permament resident who is not a citizen is required to possess a 1551 or 1151 form (The Green Card) by both U.S. and Canadian Immigration.
Citizens or permanent residents of other countries must have a valid passport and/or a valid visitor visa and should contact their local Canadian Embassy/Consulate or High Commission Office for further qualification.
If you require more information, please feel free to contact your local Canadian Embassy or Consulate office, or visit the following web-site: http://www.cbsa-asfc.gc.ca/publications/pub/rc4161-eng.html#P002