Who on Earth said Kate's views were going to become federal law, let alone Catholic ones on a Protestant majority federation?
The purpose of the clause was to protect the practice of religion, not prohibit it or impose a select religion it on the FEDERAL level.
There were states who had their own official religions then (even now a couple still have them on the books), and had religious requirements and tests in order to hold office, etc. The First Amendment allowed for them to continue doing so.
Religions have shaped our morality and law as well as culture more so than anything else including, um, uh, something else, I'm sure, Protestantism being a big mover in the US, and one major reason why we ended reigning supreme while Canada and Mexico and the rest of the Americas, nay, planet, twiddle their anxious little thumbs in our shadow all these years after we took them out of the donkey and cart thatched roof semi-post Medievel era after that was flattened by the rampaging Germanic wehrmacht.
"A fetus/embryo is not a living human being."
Facts say otherwise, agenda molded opinion not making for the most sound version of reality. Outside of sound proof echo chambers, that is,,, If they weren't, then there's one big scam going on fueling an pricey industry to terminate the existence of select fetal/embrynic non living human being thingies.