What are the opportunities and limitations of presidential leadership in the contemporary political system?

What will be an ideal response?

Answer:
Because the United States has expanded in size and influence, with diverse problems and a complex economy, there are now both more opportunities and a greater need for presidential leadership than there were before the mid-twentieth century. International concerns such as terrorism have also increased leadership opportunities for the president as commander-in-chief and the government official whose job it is to receive foreign heads of state and negotiate treaties. Growth in the size and number of federal agencies has also increased the president's role. Presidential leadership is still limited, however, by the necessity to seek the consent of the Senate when appointing diplomats and signing treaties, and by Congress's having the power to declare war and to allocate money for national defense. Congress also still has the power to impeach the president.