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Welcome to US Constitutional Law

US Constitutional Law (USC) provides a comprehensive research resource on the law, politics, and history of constitutionalism in the United States at the federal and state levels. Combining extensive primary materials with expert commentary, the service provides researchers with unparalleled access to the historical development of federal and state constitutionalism.


Impeachment is not the only official proceeding for removing public officials. But while it shares certain features with other removal proceedings (eg recall or no confidence vote), impeachment is distinguishable by its nature, scope, and procedure. With the impending threat of presidential impeachment in the US, learn more about the history, grounds for, and stages of impeachment.

Explore this article as well as related content on the No Confidence Vote, Limits of Section 4 of the Twenty-Fifth Amendment, and Can the President Be Charged with a Crime? as part of our Democracy in Crisis? Collection.

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October 21, 2019

USC September 2019 Update

 USC adds 2 new constitutional documents.

October 9, 2019

Democracy in Crisis?

Explore our curated collection of Max Planck Encyclopedia of Comparative Constitutional Law articles, book chapters, and journal articles.

September 6, 2019

New Documents

USC adds 3 new constitutional documents.

August 2, 2019

New Document Update

USC adds 1 constitutional document.