The answer (which I do not necessarily endorse) is that the Canadian government decided this particular division was not guilty, back in 1986:
The Galicia Division (14. Waffen grenadier division der SS [gal. #1]) should not be indicted as a group. The members of Galicia Division were individually screened for security purposes before admission to Canada. Charges of war crimes of Galicia Division have never been substantiated, either in 1950 when they were first preferred, or in 1984 when they were renewed, or before this Commission. Further, in the absence of evidence of participation or knowledge of specific war crimes, mere membership in the Galicia Division is insufficient to justify prosecution.