Moncrieffe v. Holder, 569 U.S. 184 (2013), is a United States Supreme Court decision in which the court ruled in a 7–2 decision that "social sharing of a small amount of marijuana" by a legal immigrant does not constitute aggravated felony and so does not require mandatory deportation.

[1][2] Adrian Moncrieffe is a Jamaican national who has lived in the United States since he moved there in 1984 at the age of three.

[3] Moncrieffe pleaded guilty to the charge of marijuana possession with intent to distribute and agreed to a deal with no jail time.

The federal government argued that as the distinction based on the amount of marijuana possessed was a sentencing and not a conviction issue and so did not affect the deportation order.

Associate Justice Sonia Sotomayor, writing for the majority, agreed with Moncrieffe's lawyers that he was still eligible for the exception for possession of small amounts of marijuana under federal law.