While I disagree with Mormon theology vigorously, your assertion is delusional.
How many times was George Romney elected governor of Michigan? Two? Three? Last I looked, Michigan wasn’t rampant with Mormons.
The bigotry you display is repulsive. I understand disagreeing with Romney on healthcare, but Mormonism is not a threat to America.
Mormons were at the forefront of the fight for traditional marriage in California...they weren’t promoting polygamy, but monogamy.
You apparently have met the “nice, family friendly mormons”. Have you ever met one or ones who viciously attack and say Christians have the wrong bible? That Paul should not be listened to, because of his insistance that we not believe another gospel and that their prophet is correct and “who is Paul anyway, that he should be listened to.”