Chappaquiddick happened during the moon landing- summer of 1969. Four years after the suicidal immigration bill was passed.
The law was changed because actuaries for the Social Security Ponzi scheme were able to see even in the early '60s that the Social Secuity/Welfare State being built (The Great Society) could not continue to work without a continuous and large increase in population.
America's birth rate was already in decline due in part to increasingly common abortion. We have since then aborted over 50 million American children who had to be replaced by someone if the SSI/Welfare State Ponzi scheme were to avoid immediate collapse.
Our elites chose to radically change the demography of our country so to enable the conversion to Socialism.
The Abortion/Welfare State/Immigration triangle.
Abortion is it's own reward.
AV
Oh well.