Sen. Joe Manchin reportedly told the White House last week that he would be willing to support a version of the billionaire tax in President Biden’s Build Back Better agenda, in a reversal from his previous criticism .

Three people familiar with his private offer informed the Washington Post this week of his endorsement of the plan, saying it was included in a list of spending and revenue proposals that he supports. It remains unclear if the West Virginian Democrat included a revenue estimate.

Manchin’s offer included spending for pre-K, climate, and Obamacare. It did not include child tax credit funds, which are set to expire this month.

The report comes the same week as a falling out between Manchin and the White House after attempted negotiations over the legislation.

On Sunday, the senator announced he could not support the Build Back Better Act — dealing a possibly fatal blow to the legislation. Manchin cited his concerns on inflation, the national labor shortage and legislative stunts that could increase the national debt.