There is about as much chance of doing as you suggest as paying off the national debt.
Just for starters the cost of deporting 12 million people is on the order 300 billion dollars and that does not account for economic loss of having to replace low paid workers with higher paid workers. Secondly, it is very unlikely that Mexico would take them back even thou deportation is covered under our treaty. Lastly, the American people would not back massive deportation. In fact, most polls have show that the majority of Americans are against deportation.
America needs practical solutions, not barroom philosophies.
If you consider the fact that the legal workers, would be Americans and would spend their money in this country rather than sending it out of the country, the economy would be a winner for having exported all the illegals.
Actually, every poll I've seen has the majority of Americans in favor of deporting the illegals. They know that they've stolen our jobs wrecked our economy and kept our wages artificially low.
Why can't we deport 12 million people? Mexico did it....
BTW, anybody heard of The Plan De San Diego? I heard Mexicans were wearing shirts with those words on it during their protests. For the uneducated...that was a plan by the Mexicans and Hispanics to kill every male American over a certain age. The national guard ended up going to Texas and driving them out, including some legal Hispanic Americans...as they couldn't prove they weren't part of the plan. Look it up, it's horrifying, especially given the words of the official representative of the Mexican government that I quote in all my posts....