Complex sentence: Their work began attracting the notoriety within professional, provincial and federal and political circles, and they were courted by the emerging movement to restrict peyote as well as Native American groups that used the substance in religious ceremonies.
Split into simpler sentences: Their work began attracting the notoriety within professional, provincial and federal and political circles. Consequently, they were courted by the emerging movement to restrict peyote as well as Native American groups that used the substance in religious ceremonies.