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Does it mean "sexual behavior at home and (forced to receive) intrauterine devices"?

Context:

The efforts by high school and middle-school officials in Washington, D.C., Virginia, Connecticut, Oregon, Wisconsin, California and Florida come as experts say criminals have turned to classrooms and social media sites to recruit students into forced domestic sex and labor rings.

More:
http://www.usatoday.com/news/nation/story/2012/09/27/human-trafficking-in-the-united-states-finds-a-home-in-the-schoolyard/57846054/1
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No, a labor ring is a group of forced workers. Here it is a forced sex and labor ring— forced to both work and provide sex.
+1
And "domestic" means "within the U.S." as opposed to "international."