#特朗普税改 Trump Tax Reform (2017 "Tax Cuts and Jobs Act") significantly lowered the corporate tax rate from 35% to 21% to stimulate business investment and economic growth. Personal income taxes also decreased, and the standard deduction was increased. The tax reform temporarily boosted U.S. GDP growth and stock market gains, but it also led to an expansion of the fiscal deficit, with wealthier individuals and large corporations benefiting more, raising controversies over increasing income inequality.