As the Covid-19 virus continues to be a threat to the health of many, there is increasing controversy over the question of whether various entities (governments, businesses, etc.) can mandate vaccination, and if so, if people should be allowed to seek exemption from such a requirement on medical grounds, general conscience objections, or on religious grounds. Even within the Church, there is some confusion, as some bishops are insisting on religious conscience protections and others are insisting that there are no religious grounds for that. The Church's highest office on doctrine (official teaching according to the tradition of the Church) indicates that legitimate exemptions in conscience must always be available but Pope Francis has seemed to contradict that in some (non-official) statements. One of the trickiest areas in this controversy is the question of the difference between something being morally acceptable vs. morally obligatory . That is, an action m...