Nearly 50 years and 4 generations haven't cured the Latino crime, education, welfare, poverty, gang, or imprisonment problems.
There is no reason to believe that amnesty plus 18 years will change the 3rd World dysfunction they're bringing.
Amerinds, the descendants of slaves, Hispanics, Polynesians, have been completely unassimilable for generations. The data are clear. For how long and how spectacularly must an experiment FAIL before we act on the results?