They were not treated well, they were immigrants looking for a better life in the US and they worked for lower wages which took away jobs from people that had been in the US in many industrial cities
I believe it is the Twelfths Amendment
The United States involvement in the recent events in Rwanda can best be described as intervention. Involvement at all rules out isolation and diplomacy exists as synonymous to international affairs. The actions wouldn't be imperialistic because the US isn't trying to take control of Rwandan affairs thus it must be intervention - a direct involvement in an effort to allow the nation to conduct its own affairs.
