What about the protestant minister who is addicted to pornograghy and an adulterer? Does God still work through him?
Your line of reasoning simply shows a confirmation bias towards anti Catholicism rather than toward the actual subject of this post, which is whether politicians who are supporting abortion. This is something I would expect any Christian to have an issue with, so should they be allowed to receive holy communion, which is Catholicism's most holy sacrament? If we allow them to, what message does that send?