Canadian Government Websites
Most government of Canada websites and publications are covered by the open government license. Here is an example of Statistics Canada data license
Source: Statistics Canada, name of product, reference date. Reproduced and distributed on an “as is” basis with the permission of Statistics Canada.
However, when using a resource from a Canadian government website or publication, always check the Terms of Use, Copyright or similar page for details.
Often, images and other resources from a Canadian government website stipulates that the reused image or resource not be used for commercial purposes. If this is the case, then add this line to your attribution: “This image cannot be used for commercial purposes.”
U.S. Government Websites
Often the information and images found on U.S. government websites are in the public domain. However, when using a resource from a U.S. government website, always check the Terms of Use, Copyright or similar page for details.