I have no problem with what you say. The employers should certainly play a key role. But that doesn’t mean we can’t address policing the border, issuing green cards, returning criminals to their home country, and employment all at the same time.
In fact, that’s probably the rational way to go at it, because each element makes the other elements easier to enforce.
As for your mistrust of another Obama-like, lawless, administration, I share it, particularly if he manages to appoint a liberal Supreme Court in the next three years.
Without stopping the ability of illegals to get employment it won’t matter how many assets and people you throw at the border.