Because they're under the delusion that the US was somehow founded on "Christian principles". Any student of history caring to look knows that's a line of hogwash. The Founding Fathers were primarily deists, not theists.
I'd really like to explore her majestic mountains, knowing every inch of those firm but supple slopes. I'd love to lose myself in her deep valleys, and pluck her fragrant, dew-covered flowers.
She is a land paradise could well be jealous of. Are you yearning to wander her farthest reaches...