Armed interventions in Libya, Haiti, Iraq, Vietnam, and Korea challenged the US president and Congress with a core question of constitutional interpretation: does the president, or Congress, have constitutional authority to take the country to war? War Powers argues that the Constitution doesn't offer a single legal answer to that question. But its structure and values indicate a vision of a well-functioning constitutional politics, one that enables the branches of government themselves to generate good answers to this question for the circumstances of their own times. Mariah Zeisberg shows that what matters is not that the branches enact the same constitutional settlement for all conditions, but instead how well they bring their distinctive governing capacities to bear on their interpretive work in context. Because the branches legitimately approach constitutional questions in different ways, interpretive conflicts between them can |