Sen. Elizabeth Warren (D-MA) may not actually descend from Native Americans, but she evidently did descend from at least one slave owner. This is according to a new Reuters investigation, which showed fellow Sens. Tammy Duckworth (D-IL), Jeanne Shaheen (D-NH), and Maggie Hassan (D-NH) also descended from a slave owner, and as did every single living president — except for Donald Trump.