Then all is lost.
Actually it's at least 30 million illegals. If they and their anchor baby children are allowed to stay this country will shortly be like Brazil.
You can kiss goodbye the following:
The 2nd Amendment
Low taxes
The 4th Amendment
And a lot more
Eisenhower deported millions with Operation Wetback I & II when the country was overrun before.
Trump promised to do this too.
I don't remember Trump saying he was going to round up all the illegals & deport them.
I'm not saying I like it, but do you really think the country would go for mass deportations of 20 or 30 million people?
Bear in mind, Brazil has a de-facto caste system created by essentially white Europeans' reputation for being intelligent and reserved and African/Aztec reputation for well, not.. AFAIK they also don't have any sort of affirmative action or other special victimhood status.