For me, it's not a bad idea for governments to make laws where there are different interests in play.
But where the federal and state laws conflict, then you want the courts to sort things out.
Sentience is the normal way to strike a balance about foetal "rights" during a pregnancy.
I accept this as a definite limit. But I prefer to think in terms of the responsibility of those who perform to test themselves within a reasonable period of time, which might mean 13 weeks or it might mean less.
I don't think people who sincerely use the heartbeat as a means of determining life are wicked. They are pro-choice, not pro-life puritans. They just draw the line in a different place.
Nearly everyone agrees that foetal interests and the interests of women both exist. It's working out where each one has priority that is hard.