Dallas, TX-Based Semiconductor Co Texas Instruments 4Q 2017 Pretax Income Up 4%, or Up $53 Mil From the 4Q 2016 ..................................................................................... On the Other Hand, Its 4Q 2017 Net Income Decreased By 33%, or By $703 Mil From the 4Q 2016, With the Entire 4Q 2017 Net Income Decline Being Due To the Impact of the Trump Tax Bill