A pledge not to give the wealthiest Americans an absolute tax cut is coming back to haunt Treasury Secretary Steven Mnuchin.

During congressional hearings this week, Democrats pressed Mnuchin repeatedly about his late November statement that President Donald Trump’s tax plan would benefit middle-class taxpayers, not the highest earners — an assurance that some quickly labeled “the Mnuchin Rule.” In response, he stopped short of repeating the pledge — and wouldn’t say whether Trump would refuse to sign tax legislation that would make top earners the biggest winners.

Mnuchin’s go-to response: Administration officials are working on a plan that can get through Congress.

“I’m not personally guaranteeing anything at the moment,” Mnuchin said after questions from Bob Casey, a Pennsylvania Democrat, during the Senate Finance Committee hearing Thursday. “As opposed to the administration coming out with its own proposal, our intent is that we will work with the House and