You say things like this whilst there are polls putting him below 35% in this thread (so outside the range you describe, and reputable source, too), and you’ve only been able to dig up one which is even close to 45%%.
Further, you’re missing the point. The polls may have different numbers, but they don’t have different vectors. Your poll and my poll have identical vectors. Sharply down. Your poll has him start at 48%, then go to 44%, the polls I can find have it slightly steeper at 40% or 39% going down to 35% or 34%, but it’s basically identical. You’re claiming he’s “WINNING”, but he’s clearly losing. You can shriek “MARGIN OF ERROR” all you like, but the vector is clear. This ain’t going great for him.
And he just wimped out, and is attracting hate from his base now, so doesn’t seem like his numbers are going to go up much. He might stablise the drop by reducing general dislike at the cost of increasing dislike from his base.
He doesn’t really use it as a lever. That’s seeming his a conventional politician, which I agree with you that he isn’t. His party tries to use it that way, but he’s just inconsistent. If you put DACA people in front of him, or have someone talk positively to him about it, he’s all for it - to the point where early in the presidency he nearly gave it away for free and over the screaming objections of the Republicans. It took some serious arguing with him to stop him. At other times he’s just been wildly against it. He’s completely inconsistent and offers it solely because someone told him it was a good idea (and on some level he likes the idea - he’s a grandfatherly racist bigot, rather than the ideological lunatic racist some of his base wants him to be).
Further, you still don’t seem to get that it’s a shit deal.
You think it’s a good deal because you are 150% certain Trump will get re-elected. Most people, including analysts in roles like your apparent one, do not believe that. It’s obviously possible, but all 3 years does is get you to the middle of the next Presidency and then he can just refuse to go any further, or even potentially tear up agreements.
Also, and this is super-cynical, but it helps Trump in a way that’s inconvenient for the Democrats, if he gives ground here. Whilst Trump is holding DACA and so on hostage, he offends the Hispanic population of the US, and other minority ethnicities. He keeps causing minor offence over and over by using it. The Democrats are not damaged by not agreeing, because their base doesn’t see that as necessary. Yet if they did agree, whilst it would boost them a little with Hispanic voters, it would boost Trump more, and he’d roll around in it, luxuriate in it, never stop mentioning his “kindness”, which actually plays okay with his base (because they’re mostly in two minds, the ones who aren’t lunatic racists, merely bigots), not great but okay, and he might pick up Hispanic voters who are socially conservative but vote Democrat because in the last thirty years, it’s the “way less racist” party.
Yeah, this has been an idea/concern for decades, but I don’t see the simple resourcing and technology issues working out in the end. It’s too easy for it to start failing, and once it does, it’s a chain-reaction. It also has the potential to fail from the inside out, because it’s obviously evil on a basic level that is abhorrent to literally all human religion, major philosophies and so on (barring Rand but she’s a cod-philosopher). But the real issue is that it rejects the stabilizing factors that keep human societies upright.
Obviously it would cause horror in the short term, but in the long-run? It would collapse in on itself.
It’s also a not-very-good movie called Elysium