What happened the last time there was an amnesty for illegal aliens:
In 1988, George H. W. Bush lost Hispanic voters by 40 points to Democrat Michael Dukakis. This election was just 2 years after Reagan and Bush had enacted the sweeping 1986 amnesty law. That law legalized millions of illegal immigrants with a promise of increased enforcement that never materialized.
If ever the Republican myth that Hispanics will vote Republican if only the party champions amnesty were to apply, it would have been that election. In the next election, Bush won 25 percent of the Hispanic vote, while Ross Perot won 14 percent.
Unassimilated Hispanics, like most unassimilated immigrants, tend to be far to the left of the American mainstream.