When did Alberta inact legislation to forcibly sterilize Natives girls and boys?

I understand BC followed suit 3 years laterWhen did Alberta inact legislation to forcibly sterilize Natives girls and boys?I didn't know anything like that had ever been done in North America. Here in the U.S., we usually either used the Army to commit government-sponsored genocide, or we tried things like stuffing 5 American Indian tribes into territory the size of Oklahoma.When did Alberta inact legislation to forcibly sterilize Natives girls and boys?It's a little early to be smoking that stuff.