Mellouli v. Lynch, 575 U.S. 798 (2015) is a Supreme Court of the United States ruling which reversed the United States Court of Appeals for the Eighth Circuit on the matter of whether Tunisian national Moones Mellouli should be deported after being convicted for driving under the influence.

These judicial bodies rejected that argument, stating the specific substance is irrelevant to whether Mellouli can be deported.

[1] The Eight Circuit appellate court ruled that the BIA judgement was "reasonable" given the language of the statute.

The case was originally brought against Attorney General Eric Holder, however, Loretta Lynch had taken over the Department of Justice at the time of the ruling, hence the case is cited as Mellouli v. Lynch.

Justice Ruth Bader Ginsburg gave the majority opinion, arguing that as the conviction for possession of drug paraphernalia under Kansas state law did not require proof Mellouli that his offence 'related to' a federal controlled substance, he could not be deported.