NBCUniversal Inc. January 11, 2018 3:52 pm Sec. Mnuchin Introduces New IRS Tax Withholding Tables Treasury Secretary Steve Mnuchin introduced new tax withholding guidelines from the IRS during a press conference at the White House on Jan. 11, 2018. Local 1:45 NYPD enters Columbia University in riot gear to clear protest 1:14 El Minuto 4/30 Spanish Edition 1:02 El Minuto 4/30 English Edition 3:21 Katy Perry's surprising regret about cheeseburger Met Gala look 4:28 ‘Apples Never Fall' and ‘Jurassic Park' star Sam Neill reveals his real name