They're buying time as they make their lives more secure and have acquired greater wealth while it's still possible.
The non-English speaking, illiterate, uneducable underclass infiltrators? It's hard to even call them infiltrators. They're brought here and subsidized. What they do is degrade every community where they'll reside. It'll make it very difficult for a lot of communities to contain things. Schools will get worse, far worse, with an influx of Spanish speaking students with little education, violent pasts and medical challenges to attend to.
The impact on schools and communities where they are is going to be insurmountable once the school year starts. In cities and towns that already have problems, the schools, police and medical services cannot contain another antagonistic group interacting with the problems they already have.
The Chamber wants this so much, they've threatened to cut off the campaign funds for the GOP if they don't pass "immigration reform". Why this and what's their urgency on this? Do they think the illegal invaders will somehow get educated and support the profit system and lower taxes and free enterprise.
Big Business is cutting its own throat by weakening the Middle Class and undermining middle class support for free enterprise, when they see all the benefits going to cronies capitalists, the underclass and billionaires. Will the American middle class, almost unique in its robust support for economic freedom continue to support economic freedom, when it seems to be fixed to benefit those close to government. Lawless government leads to lawless citizens (aka the chumps in the fixed game).