Even after the slaves were freed, they could not be employed as:
farm laborers
servants
factory workers
skilled laborers

United states v. reynolds stands for all of the following, except: parents may not withhold medical treatment even if they have a good faith religious belief against such treatment. human sacrifice may be banned by the government without violating religious freedom. polygamy may be banned by the government even when it is required by a religious practice. women in polygamous marriages do not have the right to vote.