Looking more closely at your link, the white catholics were more likely to vote for Trump than protestants were (higher than anyone except evangelicals), and as I understand it, it's white catholics that are the most prominent in congress.
Sorry, I meant politicians (as the parent referenced the GOP) rather than laypeople.
Trump overwhelmingly won among white voters - with 58% of their vote. White white catholics voted... Pretty much the same way as white non-catholics.
Comparing white catholics to all protestants is comparing apples to oranges.
Catholics are only slightly over-represented in congress, at 30% of Christians in congress (While making up 24% of the Christian population in the US.) They are also split 68/70 between democrat and republican. [1]
They may be prominent, but they aren't trying to turn the country into a theocracy.
Sorry, I meant politicians (as the parent referenced the GOP) rather than laypeople.