The discourse of the Trump era has been dominated by a conceit that the two major parties have swapped economic identities. The Democrats have supposedly abandoned their historical role as spokespeople for the working class to represent the neoliberal global elite, while the Republicans have been transmuted into scruffy populists. On the left, a mood of self-flagellating agony has prevailed, even as the party has won several elections in a row. On the right, the Republicans’ populist credibility has intensified their long-standing paranoia, “proving” that everything from the culture wars to Donald Trump’s endless crime spree is in fact a plot by the powerful to control them.

Yet, funnily enough, the two parties remain stubbornly attached to their traditional distributive goals. The Democrats still want to tax the rich and spend on the non-rich. Republicans still want very badly to do the opposite.

The Washington Post reports that Donald Trump’s campaign brain trust is working on a new economic plan to anchor his campaign. The leading idea is to pass another huge tax cut for the wealthy (a cut in corporate tax rates), paired with a tax increase on the middle class (a 10 percent tariff).

Trump’s brain trust believes current economic conditions indicate the U.S. economy is being harmed by excessively progressive taxes. To be sure, they have consistently believed this for more than 30 years through every conceivable combination of economic circumstances: high inflation, low inflation, recession, boom, war and peace,

Supply-side economics is a religion masquerading as an economic theory, and Trump’s brain trust, as it were, is a collection of the high priests of the supply-side cult: Arthur Laffer (who first began promoting supply-side economics nearly 50 years ago), Stephen Moore, Lawrence Kudlow, and Newt Gingrich.