This week, Minority Leader Nancy Pelosi unveiled a list of new procedural rules that her caucus intends to implement when the next Congress is seated. Most of these measures are unobjectionable “good government” reforms. But one of them would create a new — and all-but-insurmountable — obstacle to the passage of many of the policies that the Democratic Party claims to support.

The rule, proposed by Pelosi and Massachusetts representative Richard Neal, would “require a three-fifths supermajority to raise individual income taxes on the lowest-earning 80 percent of taxpayers.”

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Alas, there are several problems with this argument. For one thing, while progressives are committed to increasing the discretionary income of the bottom 80 percent, that does not necessarily mean keeping their tax rates frozen at historically low levels. Currently, for much of the American middle class, health-insurance premiums function as a steadily rising tax. A bill that required those households to pay a new, smaller monthly sum to the government — so as to fund a single-payer system that would actually reduce their cost of living by delivering radically cheaper health-care services — could hardly be called regressive. And the same can be said for legislation establishing universal child care, paid family leave, or any other program aimed at easing the middle class’s financial burdens by dramatically expanding the public sector’s ambitions. Equating support for middle-class families — with opposition to increasing their tax rates — is a conservative project, which Democrats have no business advancing. If the party wishes to establish structural barriers to policies that would hurt the middle class, why not require a three-fifths majority to cut Medicaid, Medicare, or Social Security?

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All this would be a bit less problematic if the Democratic Party had overcome its allergy to deficit spending (and/or accepted Modern Monetary Theory as its personal truth). But it hasn’t: In addition to forbidding tax increases on the bottom 80 percent, Pelosi has vowed to honor the “pay as you go” rule, which requires the House to fully finance any and all new government spending.

Taken together, these two requirements could make Medicare for All impossible to pass out of the House. ………

In the best case, Nancy Pelosi has decided to throw her lot with the Wall Street Bob Rubin Democrats, and in the worst case, she has been in Washington, DC for so long that she has lost touch with reality.

In either case, it is time for her to go now.