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Political Glossary

Habeas Corpus

The constitutional right of a detained person to have a court review the legality of their imprisonment.

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Updated Jun 12, 2026
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In plain English
Habeas corpus lets anyone the government locks up demand that a judge decide whether the detention is lawful.
Example
In Boumediene v. Bush (2008), the Supreme Court held that Guantanamo detainees could challenge their detention through habeas petitions.
Why it matters
What the term actually changes.
Bedrock liberty

Habeas is the oldest safeguard against arbitrary imprisonment, predating the Constitution itself.

Crisis pressure

The Constitution allows suspension only in rebellion or invasion — a line tested during the Civil War and the war on terror.

How it works
The mechanics, in practice.
The petition

A detainee (or someone acting for them) files a habeas petition asking a court to review the detention.

The review

The government must justify the imprisonment; if it can't, the court orders release or a new proceeding.

Related guide
What is judicial review?

Judicial review is the power American courts use to decide whether a law or government action violates the Constitution.

Read the guide →
Related issue brief
Should the Senate eliminate the filibuster?

The filibuster lets 41 senators block most legislation by refusing to end debate. Supporters say it protects minority rights. Critics say it makes Congress incapable of acting.

Read the brief →
You’ve learned the term. Now vote.
Should Supreme Court justices have term limits?
Live results — 152 voters
Yes — impose 18-year term limits through a constitutional amendment15%
Yes — but only through statute, preserving lifetime status on lower courts31%
No — but adopt a binding ethics and recusal code instead25%
No — keep lifetime appointments as written in Article III29%
See how 152 Americans voted
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America has spoken.
Live community results — based on 152 anonymous votes.
Yes — impose 18-year term limits through a constitutional amendment15%
Yes — but only through statute, preserving lifetime status on lower courts31%
No — but adopt a binding ethics and recusal code instead25%
No — keep lifetime appointments as written in Article III29%
See the full breakdown — by state and political lean