I'd stop free schooling of anyone coming in from now on (not ones already here) and fine the $*#@ out of anyone who hires someone who is an illegal.
There is no reason why someone who doesn't belong here should get free public education. Parents might think twice if their illegal child couldn't get an education.
Many undocumented immigrants use false social security numbers (or legit ones that were taken from someone who is deceased) to be able to get work and/or put their kids in school, so a lot of the time the school wouldn't even know the child was undocumented. Incidentally, that's how undocumented immigrants pay way more into our social security system than they cost to be here, because they can't collect on social security benefits later due to the fake or previously used social security numbers. They're actually a boon to the social security system as well as the economy in general with their income and sales taxes and purchases. But I digress...
The other more common type of documented but illegal immigrants are the ones who came here legally for work on a green card/lawful permanent resident card (ie. not "line-jumpers") but have since allowed that waiver to lapse for some reason; and it's very easy for that to happen, often for ridiculous or arbitrary reasons that have nothing to do with them willfully flaunting the legal system. Those children would be known to the schools and could be expelled if they double checked their legal status during the next year's registration, but then you have the question of do you really want a bunch of children growing up here without an education?
If you think immigrant crime is a big problem (and besides the undocumented part, illegal immigrants actually commit much fewer other crimes per capita than citizens do, for the obvious reasons of not wanting to draw attention to themselves and get caught and deported), then how much worse do you think it would be when you're dealing with millions of undocumented and uneducated youths who don't have the skills to get jobs? The government isn't getting any more efficient at deporting them, nor is it politically expedient or popular with the voting public, so you're just begging to create a huge criminal underclass. Not to mention not giving them the skills to work, so they won't be able to contribute to the economy like the current Dreamers do.
LEGAL immigrants are fine, btw. It's the line-jumpers that piss me off. Also - dreamers who are protesting/marching around people's houses? Shut the fuck up. YOU HAVE NO RIGHTS IN MY COUNTRY and DEMANDING THEM pisses me off.
It's a common mistake to think that non-citizens have no rights under the Constitution, but
that's not true. There are some rights only available to US citizens, but undocumented immigrants have the same First, Fourth, Fifth and Eighth Amendment (among others) protections as anyone else. So yes, they actually do have the right to protest and march.
Besides all that though, I don't understand all the hostility toward the Dreamers. They didn't choose to come here, their parents did, so they're not "line-jumpers" and didn't choose to break the law. Also, many of their parents came here legally and had their green cards lapse, so it's not like it was some kind of blatant flaunting the law situation even with their parents, it was just as likely a mistake or unfortunate circumstances. And most of the people who are "line-jumpers" are fleeing from war-torn or drug crime plagued regions that might as well be described as war-torn in many cases, or from oppressive governments and failing economies, and are just seeking a better/safer life. We did that with people from Cuba and Southeast Asia, so why not people coming up from Central and South America or the rest of the Caribbean? It's not like they're coming in such unsustainable numbers that we can't handle here, and they contribute positively to the economy and to future innovation (that is, if we educate them), since our population growth is stagnating, like it is in most Western nations.
I don't see how you can look at a kid or a young adults who's lived here almost their entire lives and never made a choice to break the law and be angry at them or want to throw them out of the country even if you have an otherwise hardline stance on immigration. They're as American as you or I except for a lack of papers, and have no idea how to live back in the countries of their birth. Some don't even speak their native language. It would be like throwing them into the lion's den to send them back in many cases. It's also a mistake to think they're all just working in unskilled labor or fast food jobs with high turnover, as many of them have the same types of jobs and careers as any broad spectrum of US citizens would, so it would be counterproductive to remove them from the workforce.