I will disagree with this statement.
Christianity of any form in the United States has all but been banished to the dark corners of the United States.
For any Christian morality to be uttered in public is to bring down on your head such vitriol as to make one crawl in to the nearest sewer to escape.
Even a few Catholic Bishops might join in on the attacks if you speak out against the LBGT mafia using Christian dogma.
The First Amendment and Free Speech are all but dead.
Plenty of Catholics practicing their faith in California where I live. Very active folks.