The decades-old Republican dream to overhaul the tax code collided with grim reality this week as the House G.O.P. revealed a bill, the ungracefully titled Tax Cuts and Jobs Act, as ungainly and inequitable as the rushed process to write it. ”I want the House to pass a bill by Thanksgiving,” Donald Trump told reporters on Tuesday, pushing for a quick and painless debate. ”I want all of the people standing by my side when we get ready to sign by Christmas—hopefully before Christmas.” But Thursday’s overdue unveiling was hardly a kumbaya moment for the Republican Party. Already, Republicans are clashing over the details of a bill that would dramatically cut taxes for corporations, boost the rich, hurt many members of the middle class, and blow out the budget deficit, potentially putting the kibosh on the president‘s wildly optimistic timeline.

With the number of days before the holiday dwindling and polls showing mounting opposition to the plan, a growing number of Trump’s allies are coming out against it. One of the biggest sticking points is the bill’s elimination of the state and local tax deduction, which would dramatically raise rates in high-tax blue states. As Bloomberg notes, “the ink was barely dry on the first draft when at least four Republicans declared they would vote against the bill in its current form”—all from New York and New Jersey. The House G.O.P. can only afford 22 defections before being unable to pass a bill.

But the fight over the state and local tax deduction is just the tip of the iceberg. Fellow New Jersey Rep. Thomas MacArthur spoke vehemently against capping the mortgage interest deduction rate at $500,000, down from $1,000,000. “Nobody knew that was in there. They kept that from us and I don’t appreciate that,” he told Bloomberg. Others are concerned that the legislation slashes the corporate interest deduction, potentially hurting small businesses. Trump tweeted Thursday that Republicans need to “hold strong and do what is right for America” in the face of a lobbyist onslaught, but opposition from special-interest groups, too, could kill the bill. In a statement, William Brown, president of the National Association of Realtors, said that the bill “appears to confirm many of our biggest concerns.” There’s also “significant concern from rank-and-file lawmakers” that the new 25 percent pass-through rate will fail to help small businesses. And the call for a 20 percent excise tax on payments that U.S. companies make to offshore affiliates, which is intended to prevent corporations from shifting profits abroad to countries with lower tax rates, reportedly has the Koch brothers steaming. Bloomberg notes that Americans for Prosperity, which is backed by the Brothers Koch, is criticizing the plan, calling it a “backdoor border-adjustment tax.” The National Federation of Independent Business said Thursday that it could not support the plan, and the National Small Business Association remains on the fence.

Meanwhile, according to Politico, there‘s a chance that Republicans will push to include a provision that repeals Obamacare‘s individual mandate, which would offset a portion of the plan‘s cost, but which would make the already polarizing bill even more politically explosive. Rep. Mark Meadows, the divisive Freedom Caucus chair, told Politico there is an “overwhelming consensus” to hamstring Obamacare as part of tax reform, and other Republicans “aren‘t shooting [the idea] down altogether.” (As a reminder, scrapping the individual mandate is what ultimately doomed the G.O.P.‘s repeal-and-replace push.) Meadows added on Morning Joe that he opposes the carried interest loophole currently written into the bill—and that Trump does, too.