In the United States, the Emergency Quota Act of May 19, 1921 limited the annual number of immigrants who could be admitted from any country to 3% of the number of persons from that country living in the United States in 1910, according to Census figures.
... actress (+ 1983)
April 22 - Robert Oppenheimer, physicist (+ 1967)
May 6 - Harry Martinson, swedish author, winner of the Nobel Prize in literature
May 11 - ...