Three years into his presidency, Trump’s signature legislative achievement remains a Republican tax bill that made sweeping changes to the tax code — the Tax Cuts and Jobs Act. As Business Insider’s Joseph Zeballos-Roig recently reported – The law was the biggest overhaul to the nation’s tax code in three decades, and the president pitched it as “rocket fuel” for the American economy. It permanently slashed the corporate tax rate to 21% from 35% while also providing temporary benefits for individuals and their families.