Dallas, TX-Based Oil & Gas Co Pioneer Natural Resources 4Q 2017 Net Income Was $665 Mil, Up a Massive 18 TIMES or Up By $709 Mil From the 4Q 2016 Net Loss of $44 Mil ....................................................................................... $625 Mil or 94% of Pioneer's 4Q 2017 Net Income of $665 Mil Was Due Solely To the US Tax Debt Forgiveness Feature in the Texas-Favored US Trump Tax Bill