San Antonio, TX- Based Oil & Gas Co Valero Energy 4Q 2017 Net Income Was $2,400 Mil, Up 477% or Up By $1,984 Mil From the 4Q 2016 Net Income of $416 Mil .................................................................................. $1,862 Mil or 94% of the $1,984 Mil Net Income Improvement Came From an Income Tax Benefit From the Texas-Favored Trump Tax Bill, With the US Federal Income Tax Debt Forgiveness Feature in the Trump Tax Bill Accounting For More Than $1,862 Mil