The mystery donor to Pruitt's legal defense fund is America's "richest self-made woman," donor to Koch causes, an ex-Trump adviser, and invested in companies that span the steel, aluminum, recycling, real estate sectors.

The mystery donor to Pruitt's legal defense fund is America's "richest self-made woman," donor to Koch causes, an ex-Trump adviser, and invested in companies that span the steel, aluminum, recycling, real estate sectors. https://t.co/p68s5RoY92

— Mother Jones (@MotherJones) January 10, 2019