Re: an article entitled "Hanukkah Brings Light to Others," Rabbi

Wildwood - Re: an article entitled "Hanukkah Brings Light to Others," Rabbi Ron Isaacs said, "There are many people today in the U.S. and all over the world that are still enslaved, and at Hanukkah, some Jewish families choose to donate to causes that work to help those who are yet to have light in their homes and in their world." Where are these enslaved people in the U.S.? If someone could explain that would be great because I have not heard about enslaved people in the U.S. since the 1800s.