The Slaves that arrived in the New World were transported to the Caribbean and South America to work in the sugar cane fields. 5% of all the Slaves found their way to what is now the United states. The American government outlawed Slave importation to the new nation in 1806, and the American government was abolitionist virtually from it's inception.
The Muslims actively preached and practiced Slavery as part of their Religion, and in some parts of the world the Muslims still practice Slavery.
The basic dislike of the United States by Mr. Dingell and his ilk is soiling my floor.
I met Cong. Dingell at a Congressional Delegation visit to the U.S. Embassy in Buenos Aires a few years ago. He's not a bad guy, really. Just has a lot of terrorists/supporters in his district.