... people like this ... Those people ...
Just listen to yourself.
... may very well become numerous enough to put one of their own in powerful governmental positions.
This IS a democratic republic, no? And majority rule is the foundation of it, no? Government of by and for the people, no?
You sound like Pharoah who was scared to death of the population growth of the Israelites among the Egyptians. Let's hear it for a decree to put all first-born Christian males to death!
Better yet, just pass some more laws outlawing Christian beliefs in the public square.
IIRC, many of the "the end is near" folks over the centuries, including many business and governmental leaders, have used such religious beliefs to inform their environmental policies.
Wow, they use their beliefs to inform their politics. Wow, what evil people they must be.
"Why bother", they have reasoned, "trying to protect the environment for the future when it is clear that the Rapture is very nearly upon us?"
Prove this please. I haven't heard such a thing. Are you tarring the majority with the deviations of a few?