American popular culture inhibits a close relationship between African-Americans and the African continent.
When Puerto Rican and Mexican workers came to the U.S. in large numbers, they faced similar discrimination and bigotry.
A law of 1790 said that only "free white persons" were eligible to be naturalized. But courts struggled for years afterward to tell who was white at all.
The makings of our modern resettlement system can be traced back to the fallout of the Vietnam War, a cascade of international crises stoked by the U.S.