米国官邸、The Tax Cuts Act Follows through on President Donald J. Trump’s Promise of Middle Class Tax Cuts(20日)個人所得税減税関連 2017/12/21 官庁等情報 米国官邸、The Tax Cuts Act Follows through on President Donald J. Trump’s Promise of Middle Class Tax Cuts(20日)個人所得税減税関連 https://www.whitehouse.gov/briefings-statements/tax-cuts-act-follows-president-donald-j-trumps-promise-middle-class-tax-cuts/