Against all odds, Congress has passed a historic tax reform bill, reducing individual and corporate tax rates, and reforming the tax code for the first time in 31 years. Although it has faced intense media criticism, public support for the bill has grown as tax cuts start to show up in paychecks and hundreds of businesses share their tax reform savings with their workers through bonuses, pay raises, and increased benefits.

Yet despite the success of the bill, the tax reform battle has just begun. If history is a guide, Republican lawmakers and tax reform proponents will have to spend years fending off the coming attempts to repeal, cut back, and discredit the tax reform bill.