Earlier quoted context omitted.
You probably should look at more than just the start date for that act. > Exclusion was repealed by the Magnuson Act on December 17, 1943, which allowed 105 Chinese to enter per year. Chinese immigration later increased [to 2000/year from the "Asiatic barred zone"] with the passage of the Immigration and Nationality Act of 1952, which abolished direct racial barriers, and later by the Immigration and Nationality Act…
Fair enough. That's still over half a century ago. Everyone involved in setting these barriers are dead.
It still has significant impact.