A more plausible criticism is that Obama is trying to lay down precedents and create facts on the ground that will make it impossible to reverse his ratchet toward amnesty.
I’m sure that’s part of his thinking. Indeed, he says that’s his ultimate goal. He’s insisted several times that all Congress has to do is pass a bill that does what he wants and he’ll stop doing what he wants without Congress.
Which points to why I think he’s trolling. As Robert Litan of the Brookings Institution notes, Obama “could’ve done all this quietly, without making any announcement whatsoever.” After all, Obama has unilaterally reinterpreted and rewritten the law without nationally televised addresses before. But doing that wouldn’t let him pander to Latinos and, more important, that wouldn’t achieve his real goal: enraging Republicans.