The great election-eve middle-class tax cut began not as a factual proposal, but as a false promise.

When President Trump abruptly told reporters over the weekend that middle-income Americans would receive a 10 percent tax cut before the midterm elections, neither officials on Capitol Hill nor in his administration knew anything about such a tax cut. The White House released no substantive information. And although cutting taxes requires legislation, Congress is not scheduled to be back in session until after the Nov. 6 elections.

Yet Washington’s bureaucratic machinery whirred into action nonetheless — working to produce a policy that could be seen as supporting Trump’s whim.

One such option now under discussion by administration officials is a symbolic nonbinding “resolution” designed to signal to voters ahead of the elections that if Republicans hold their congressional majorities they might pass a future 10 percent tax cut for the middle class.