The court is mindful of the extraordinary importance of the government's efforts to safeguard the country from terrorism. In light of the high stakes of those efforts as well as the executive branch's expertise, courts undoubtedly owe the political branches a great deal of deference in the area of national security ... Nevertheless, the Constitution places affirmative limits on the power of the Executive to act, and these limits apply in times of peace as well as times of war. Heedlessly to refuse to hear constitutional challenges to the Executive's conduct in the name of deference would be to abdicate this court's responsibility to safeguard the rights it has sworn to uphold.
