also assurance of u.s. support. >> professor feldman, you've stated that the president's demand to the president of ukraine constituted an abuse of power's how does the president's decision to withhold military aid affect your analysis? >> it means it wasn't just an abuse of power, because the president was serving his own personal interests but also an abuse of power insofar as the president was putting american national security interests behind his own personal interests. it brought together two important aspects of the abuse of power. self-gain and undercutting our national security interests. >> theest points to president trump using military aid for his personal benefit, not for the benefit of any official u.s. policy. prompt karlan, how would the framers have interpreted that? >> well, i can't speak for the framers themselves, obviously. my view is that they would say that the president's authority