How to challenge a law as unconstitutional?

Asked by: Dorothy Nader  |  Last update: March 15, 2026
Score: 5/5 (52 votes)

To challenge a law as unconstitutional, you generally need to file a lawsuit in federal court, demonstrate you have "standing" (personal injury from the law), and serve notice to the relevant Attorney General. The process involves filing a complaint detailing the law, the constitutional violation, and supporting evidence, requiring legal expertise to navigate complex rules like Federal Rule of Civil Procedure 5.1.

How can a law be declared unconstitutional?

A state may challenge the constitutionality of a federal statute by filing a lawsuit in court seeking to declare the federal law unconstitutional. Such a lawsuit is decided by the courts, with the Supreme Court having final jurisdiction.

Who can overturn a law that is unconstitutional?

The legislative branch makes laws, but the President in the executive branch can veto those laws with a Presidential Veto. The legislative branch makes laws, but the judicial branch can declare those laws unconstitutional.

What is the remedy for a law that is unconstitutional?

The power of judicial review allows the Supreme Court to strike down laws that do not comply with the Constitution, ensuring the Constitution remains the supreme law of the land.

How to determine if a law is unconstitutional?

Strict scrutiny is a form of judicial review that courts in the United States use to determine the constitutionality of government action that burdens a fundamental right or involves a suspect classification (including race, religion, national origin, and alienage).

Can you do a Constitutional Challenge for a state statute?

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How to get a law overturned?

To repeal any element of an enacted law, Congress must pass a new law containing repeal language and the codified statute's location in the U.S. Code (including the title, chapter, part, section, paragraph and clause).

Who gets to decide if a law is unconstitutional?

The judicial branch, in turn, has the authority to decide the constitutionality of federal laws and resolve other cases involving federal laws. But judges depend upon the executive branch to enforce court decisions.

How do you challenge an unconstitutional law?

New Rule 5.1 requires a party that files a pleading, written motion, or other paper drawing in question the constitutionality of a federal or state statute to file a notice of constitutional question and serve it on the United States Attorney General or state attorney general.

What counts as unconstitutional?

Prohibited or not authorized by, or otherwise inconsistent with, a constitution. Used to describe a statute, regulation, order, government policy or conduct, court decision, or other act or thing purporting to have the force of law that violates one or more constitutional provisions.

What happens if a law is overturned as being unconstitutional?

Judicial pronouncements of unconstitutionality are no different. They are temporary, they are always subject to reversal on appeal or repudiation by a future Supreme Court, and the temporarily disap proved statute continues to exist as a law until it is repealed by the legislature that enacted it.

Who has the power to nullify a law?

Nullification and the Supreme Court. Definition: The theory that the states are the final arbiters of the limits of national authority and that each may veto the enforcement of federal laws it determines to be unconstitutional, at least within its own boundaries.

Do Republicans or Democrats control the Supreme Court?

The U.S. Supreme Court currently has a 6-3 majority of Republican-appointed justices, making it a conservative-leaning court, a balance solidified by appointments from Presidents George W. Bush, Donald Trump, and a shift after the passing of Justice Ruth Bader Ginsburg, with only three justices appointed by Democrats. This conservative supermajority typically consists of Chief Justice John Roberts and Justices Clarence Thomas, Samuel Alito, Neil Gorsuch, Brett Kavanaugh, and Amy Coney Barrett, while the liberal wing includes Justices Sonia Sotomayor, Elena Kagan, and Ketanji Brown Jackson. 

Who has the ultimate authority to declare a law unconstitutional?

The best-known power of the Supreme Court is judicial review, or the ability of the Court to declare a Legislative or Executive act in violation of the Constitution, is not found within the text of the Constitution itself.

What is an example of an unjust law?

  • Money Bail. ...
  • Private Bail Companies. ...
  • Suspended Drivers Licenses. ...
  • Excessive Mandatory Minimum Sentences. ...
  • Wealth-Based Banishment That Outlaws Low-Income Housing. ...
  • Private Probation Abuses. ...
  • Parking Tickets to Debtors' Prison. ...
  • Sex Offense Registration Laws.

What is the 14th Amendment?

Passed by the Senate on June 8, 1866, and ratified two years later, on July 9, 1868, the Fourteenth Amendment granted citizenship to all persons "born or naturalized in the United States," including formerly enslaved people, and provided all citizens with “equal protection under the laws,” extending the provisions of ...

What does nullification mean?

Nullification is the act of making something void, ineffective, or legally invalid, often referring to a state's attempt to invalidate a federal law or a jury's refusal to apply a law to a case (jury nullification). It means canceling something out, rendering it without force or value, and appears in legal, political, and everyday contexts, from invalidating contracts to overriding laws, like states legalizing marijuana despite federal prohibition.
 

What to do if a law is unconstitutional?

Persons may bring suits to have a law declared unconstitutional (declaratory judgement suit) if they can establish standing, by showing there is an actual dispute. Persons may not merely choose a law they think is unconstitutional and sue to have it declared unconstitutional.

Who holds a law to be unconstitutional?

Table of Laws Held Unconstitutional in Whole or in Part by the Supreme Court | Resources | Constitution Annotated | Congress.gov | Library of Congress.

What is unconstitutional under the 4th Amendment?

The Fourth Amendment to the United States Constitution prohibits the federal government from conducting “unreasonable searches and seizures.” In general, this means police cannot search a person without a warrant or probable cause. It also applies to arrests and the collection of evidence.

What is a 5.1 constitutional challenge?

(A) Service of Notice by a Party.

A party who challenges the constitutionality of a statute or ordinance in any proceeding in which the state or any agency, officer, or employee of the state is not a party must file with the court and serve on the Attorney General a notice of the constitutional challenge.

What to do if your constitutional rights are violated?

800-884-1684. contact.center@calcivilrights.ca.gov.

What is a facially law?

A facial challenge contends that a government law, rule, regulation, or policy is unconstitutional as written — that is, on its face. This challenge differs from an as-applied challenge in that it invalidates a law for everyone — not just as that law is applied to the particular litigant challenging it.

Can an unconstitutional law be enforced?

If a statute is facially unconstitutional, the courts have stated that it cannot be enforced and the legislature may choose to repeal an unconstitutional statute to avoid confusion or to replace that statute with a new version that seeks to reach similar policy goals.

Can a president overturn a Supreme Court ruling?

No, the President cannot directly overturn a Supreme Court decision; only the Court itself (through a new ruling), the Constitution (via amendment), or new legislation by Congress can overturn a major ruling, though Presidents can try to influence future decisions by appointing new justices or challenge rulings through appeals, and historically, some have selectively enforced or ignored certain rulings, as seen with Lincoln and the Dred Scott case. 

Whose power is being checked when a law is declared unconstitutional?

The framers stated that the courts' power to declare laws unconstitutional would provide a check on the legislature, protecting against excessive exercise of legislative power.