As a mainstream Mormon I can attest that this is definitely not a thing. In fact, I personally know some VERY prominent Mormons who anonymously fund efforts against human trafficking and the likes.

The small break away sects a la Warren Jeffs I know nothing about, however, and this very well could be happening there for all i know. We want absolutely nothing to do with them

As a mainstream Mormon I can attest that this is definitely not a thing. The small break away sects a la Warren Jeffs I know nothing about, however.