Abortion has become the go-to panic topic for Lefty legislators. It's really no different than southern politicians in the 1950's scowling disapprovingly at Kennedy as a "Cath-o-lic" or closet communist imho.
What they are doing is basically saying that people of a particular moral ethos are disqualified from public service in the US. It's a sad, McCarthyist point of view that I hope is crushed mercilessly by people with minds of their own.