Displaced Persons Act
The Displaced Persons Act (1948) was an act passed by the 80th United States Congress which gave permanent residence to 400,000 World War II refugees. President Harry Truman signed the Displaced Persons Act but strong critic of it. He stated in a speech after the signing:
"It is with very great reluctance that I have signed S. 2242, the Displaced Persons Act of 1948. If the Congress were still in session, I would return this bill without my approval and urge that a fairer, more humane bill be passed. In its present form this bill is flagrantly discriminatory. It mocks the American tradition of fair play. Unfortunately, it was not passed until the last day of the session. If I refused to sign this bill now, there would be no legislation on behalf of displaced persons until the next session of the Congress. It is a close question whether this bill is better or worse than no bill at all. After careful consideration I have decided, however, that it would not be right to penalize the beneficiaries of this bill on account of the injustices perpetrated against others who should have been included within its provisions." 
The act was amended in 1954.