Don't forget the Kennedys:
Could we strive to be a Second World Country, if we tried really hard?
And don't forget Ronald Reagan and the Reagan Amnesty of 1986.
I believe the original estimate was that 1 million illegal immigrants would apply.
From memory, the number is now close to 4 million, and immigrants from that era can still apply, 30 years later, even if they haven't lived in the USA for decades!
The 1965 immigration Bill started in the House. Known as the Hart-Celler. The mover and shaker in the Senate was New York Senator Jacob Javits. Kennedy was bit player.