How can the constitutionality of a Law be challenged in the USA?
<p>Can the constitutionality of a law in the United States be challenged other than through the Supreme Court?</p>

<p>In the United States, the constitutionality of a law can be challenged in any court. Unless and until the court is reversed by a higher court, then the law will be considered unconstitutional and invalid.</p>

<p>A jury can also theoretically nullify a law for any reason, including unconstitutionality, however, the jury's finding will only hold for that one case that they are trying.</p>

united-states constitutional-law