Here’s how it works: If you point out that the bill hugely favors the wealthy at the expense of ordinary families, Republicans will point to the next few years, when the class-war nature of the plan is obscured by those temporary tax breaks — and claim that whatever the language of the law says, those tax breaks will actually be made permanent by later Congresses.

But if you point out that the bill is fiscally irresponsible, they’ll say that it “only” raises the deficit by $1.5 trillion over the next decade and doesn’t raise deficits at all after that — because, you see, those tax breaks will expire by 2027, so the tax hikes will raise a lot of revenue. By the way, the claim that middle-class taxes will rise is crucial to passing the bill: Only bills that don’t raise deficits after 10 years can bypass the filibuster and be enacted by a simple Senate majority.

The point, of course, is that these claims can’t both be true. Either this bill is a big tax hike on the middle class, or it’s a huge budget-buster. Which is it? Nobody really knows; probably even the people who wrote this monstrosity don’t know. But someone is being scammed, bigly.

Oh, and ignore claims that tax cuts for corporations would jump-start the economy and pay for themselves. Of the 42 ideologically diverse economists surveyed by the University of Chicago on the impact of Republican tax plans, only one agreed that they would lead to substantial economic growth, while none disagreed with the proposition that they would substantially increase U.S. debt.

So it’s a giant scam. And while the exact nature of the scam may be unclear, ordinary American families would end up being the victims either way.

For suppose those temporary tax breaks did end up becoming permanent, so that the budget deficit soared on a long-term basis. Then what? You know the answer: Republicans would suddenly revert to the pretense that they’re deficit hawks, and demand “entitlement reform” — that is, cuts in Medicare, Medicaid and Social Security, programs that ordinary families depend on. In fact, they’re already talking about those cuts — they’ve started the switch even before getting the suckers to take the bait.