Just Google top 10 nations where immigrants arrive from and look at the ones in particular that are sending the ones that are mostly applying for citizenship. We barely get any from Christian nations compared to the over all.
Mostly Asian. South America, some catholic, but when you tally them, the totals, tge percentage are mostly nkm Christian today. Asian, Muslim, ranging from China, India, Vietnam, Middle East. South Korea, even Russia.
The larger number of the Mexican. Hispanic South American for years never bothered to become citizens at all although more are now, but the larger percentage still don't. A lot of the newly arrived also retain dual citizenship. They migrate back and forth or a lot do.