Neustadt writes that the dominant presidency era began when, “Congress, having been embarrassed at Pearl Harbour by the isolationism it displayed beforehand, gave successive Presidents more scope in defense budgeting and in the conduct of diplomacy[...]the President became the system’s final arbiter” (219). The attack on Pearl Harbour gave forced Congress to give more power to the President to deal with international crises, defense and military operations. I think the same thing happened after the terrorist attacks of 9/11. Congress, realizing their failures and potential dangers ahead, gave more power back to the Presidency like the powers of Truman, Eisenhower and Lyndon B. Johnson before them. These new powers show in the Iraq and Afghanistan conflicts. Presidents after Nixon would never be able to send troops into combat with a full support from Congress like both Bush and Obama where, which support Obama and Bush have a dominant