US vs. Canadian regulations. Are the labeling standards different for the US and Canada?

Yes, and Genesis uses the appropriate label standard in generating labels. For your reference, the Canadian labeling standards can be found in this on-line document:

http://www.inspection.gc.ca/english/fssa/labeti/guide/toce.shtml

The US labeling standards can be found in this section of our Federal Code of Regulations:

http://a257.g.akamaitech.net/7/257/2422/14mar20010800/edocket.access.gpo.gov/cfr_2003/aprqtr/21cfr101.9.htm

A few differences are:

Rounding rules.

%DV Vitamin A is calculated from RAE in the U.S.; from RE in Canada.