Legal Status of Ayahuasca
"On February 21 of this year, 2006, the US Supreme Court ruled in favor of the Centro Espírita Beneficente União do Vegetal (the UDV) in the case “Alberto R. Gonzales, Attorney General, et al. Petitioners v. O Centro Espirita Beneficente União do Vegetal et al.” The UDV is now legally allowed to drink ayahuasca (which contains the controlled substance DMT) in their ceremonies here in the US."
Anderson, Brian, "Entheogenic Visions: The Sacred Union of Word & Image," Undergraduate Humanities Forum, Mellon Research Fellows 2005-2006, Word & Image (Philadelphia, PA: May 5, 2006), pp. 2 and 30.