Around 2/3 of white "evangelical" Christians support "Christian nationalism," which means that they wish to impose Christianity on the US and make non-Christians second-class citizens.

Over 1/4 of them state that they want an authoritarian leader "who is willing to break some rules if that’s what it takes to set things right."

I imagine the Christian Republic of America as resembling the Islamic Republic of Iran, with similar repression directed against people who reject imposed rules for clothing, similar repression and torture of protesters, and similar execution of protesters.