"I do not believe it is the federal government's role to ever "outlaw" abortion."
Are you saying this becaue you believe there should be no federal laws outlawing murder? Or, because of the unique circumstances of abortion...i.e. the victim is inside a woman, that this should prevent the feds from becoming involved?
The powers not delegated to the United States by the Constitution, nor prohibited by it to the States, are reserved to the States respectively, or to the people.
-- Amendment 10
This is a matter of state sovereignty. If we decide that it is the role of the federal government to begin making laws such as these, the entire purpose of having individual sovereign states becomes meaningless.