I’m guessing he doesn’t know that the CSA had their own bill of rights, numbered very differently. (These are the people who will tell you the civil war had nothing to do with slavery, too)
The importation of negroes of the African race from any foreign country other than the slaveholding States or Territories of the United States of America, is hereby forbidden; and Congress is required to pass such laws as shall effectually prevent the same.
Congress shall also have power to prohibit the introduction of slaves from any State not a member of, or Territory not belonging to, this Confederacy.
