Then elect different ones.
And prepare for the labor shortages elsewhere while we go through the grim arithmetic of trying to add enough policemen, secretaries, supervisors, inspectors, busdrivers, jailers, jails, and holding pens to transport 12 million people: but don't make it too permanent, you're going to fire them when they're done. Doesn't sound practical. Let's choose a bit among who we have, and work that way.
As opposed to the grim arithmetic of having these same Americans deal with the 12M+ people here ILLEGALLY; who need schools for their children, healthcare, a residence, drivers license, a car, space to drive on the crowded highways, etc. Why do us law-abiding Americans have to pay for all that with OUR taxes??
Have you ever lived/worked overseas, legally or otherwise?