LBJ did more to address poverty than any president save Roosevelt. If you're going to ask that specific question, ask about the money wasted on the Vietnam war and mayne the space program -- medicare/medicaid and the "Great Society" programd directly tackled poverty, and LBJ passed the civil rights act which, oh by the way, was Kennedy's legacy. Fixing healthcare is one way of directly addressing poverty. You can argue the methods (I would prefer single payer) but the intent is at least pointing in the right direction.