I personally don't believe there's going to be concentration camps.....even the OP stated that may have been going too far.
What will likely happen is enforcing existing laws on the books.......which should had been done over 40 years back. It was the failed 'drug war' that got this started, the spraying of crops just inside of the border & similar type actions, that started this issue, along with no plan to secure the border before acting. Then the following POTUS's in Ford/Carter didn't stop the war, nor did secure the border. So America has reaped the seeds planted, just as with other crises.
Examples are, when former POTUS Bush II (or Jr) started a war with Iraq over lies, who were actually doing a great job at killing terrorists whom were caught within their border & now the area is total chaos. Fast forward another decade, Obama did the same in Libya, where the citizens had it made, a free university education from oil profits, we helped a few rebels dethrone their leader & now there's still no clear leader in the area.
My point being, not just this illegal immigration deal, also many other issues we face (the ISIS mess) were in large part, created by our own government, using (or wasting) our precious tax dollars.
Finally, what I don't understand, is that many US corporations (even Dell) has an assembly plant in Mexico, there's lots of jobs. Why are they still coming here? The first President Bush pushed for NAFTA, which Clinton subsequently signed, which created a trade pact between Canada, Mexico & the US. We don't see Canadians flocking en masse across the border, many more jobs went to Mexico than Canada (far many more). So what I fail to understand is why do these folks with opportunities keep leaving their own country on a daily basis in flocks? This is exactly what the pact was supposed to assist with.
As far as illegals here now, I agree with the many who stated to punish their employers with severe fines and imprisonment with hard labor if refuse to pay, and use the local police (with training provided by the Feds) to round up these who doesn't belong here in block by block, 3AM busts. There's a houseful just down the street from me, and they're rarely seen, so they probably maintain a low profile for that reason.
Finally, citizens should be rewarded (per head) to provide information in regards to the whereabouts of illegals, this would greatly assist the authorities in rounding these suspects up. Most all of us knows our own neighborhood, I'd hope one knows their immediate neighbors.
Any with criminal records of any type should be placed to the front of the deport train, with a priority on illegals who are here & pregnant, and have yet to bear the child, these must be the #1 priority to capture & get back home ASAP & a much larger reward paid for information, as this would save our government tens of thousands of dollars in welfare benefits, if not over $100,000 each.
We've got to stop the bleeding, inaction is acceptance of breaking the law, and these illegals are breaking the law, be it civil or criminal, a 2nd offense would be considered criminal. If this is going to be accepted, may as well not have laws on the books & a total open society, a 'free for all' type of country, where everything is legal. That's not going to happen, so let's at least go ahead & do that the past 6 US Presidents didn't have the guts to do (prior to Obama, as he was enforcing). Some of the current raids were planned months before Trump was sworn into office, so Obama did have the courage to make a stand. Trump is getting all of the blame (at this time) for what he didn't do nor plan.
Cat