Let's be honest, most Americans tolerated their own demise as a culture, without stepping up for far too long.
We lost our country, even if we did deport illegals, we'd probably see massive riots, and occupation of the U.S South-West by Mexicans, Blacks, and White Liberals traitorous to the U.S.A.
Once the U.S.A goes into squash the rebellion, then a Civil War erupts.