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Lesson

War and Constitutional Separation of Powers

Guiding question

How should the war powers be shared among the three branches of government?

Published
Feb 11, 2026
U.S. Capitol building under a clear sky, featuring a dome and classical architectural details.
The U.S. Constitution divides war powers between the president and Congress. The delegates to the Constitutional Convention were focused on creating a government powerful enough to protect liberty, but not so powerful that it would threaten liberty. They worked carefully to craft the war powers of the new government, knowing that history was full of examples of war, so that war powers were necessary, but also of rulers who had abused the power and endangered liberty in order to make war.

Objectives

  • Students will understand the struggle during the Civil War between Lincoln and the Supreme Court over habeas corpus.
  • Students will examine the struggle over war powers between Harry Truman and the Supreme Court during the Korean War.
  • Students will discuss conflicts related to the war powers during the War on Terror.

Materials

Lesson Components

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Lesson plan

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Key Terms

checks and balances
habeas corpus
ex parte
due process
unreasonable search and seizure

More Information

Students need to be familiar with the concept of checks and balances prior to engaging with this lesson.

Standards


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