Donald Trump and the Powers of the Presidency

The extraordinary authority of the U.S. Presidency has no parallel in the democratic world. Today that authority resides in the hands of one man, Donald J. Trump. But rarely if ever has the nature of a president clashed more profoundly with the nature of the office. From the moment of his inauguration, President Trump has challenged our deepest expectations of the presidency. But what are those expectations, where did they come from, and to what extent are they (not) being met? What aspects of Trump are radically different from past presidents and what aspects have historical antecedents? And what are the implications for the future of the Trump administration and for presidential administrations to come?