Republican lawmakers on Monday began revising their proposed overhaul of the U.S. tax code, as Democrats pointed to the loss of popular deductions as proof the legislation was an assault on the middle class. A draft bill unveiled last week by Republicans in the House of Representatives, if enacted, would be the biggest restructuring of the tax system since the 1980s and the first major legislative victory of the Trump presidency. One of the first changes agreed to on Monday, related to carried interest, would go towards fulfilling one of President Donald Trump’s campaign promises.