What actions does the LDS church (Mormon) take when a member does not pay tithing?

According to official policy, what happens to members of the LDS church who do not pay their tithing? Specifically, what happens to those who: 1. Forget to pay tithing for an extended period of time, or 2. Openly refuse to pay tithing. Background: I am a Mormon, and I frequently see people online saying that members of the Church of Jesus Christ of Latter-day Saints are forced to pay tithing by various enforcement methods. I would like there to be a canonical answer on this site to point people towards. I will offer my anecdotal experiences in the comments.