The entheogen ayahuasca, which contains the psychoactive compound dimethyltryptamine (DMT), has been the subject of increasing legal scrutiny in the last few decades as Santo Daime has expanded. The decoction has been explicitly legal for religious use in Brazil since 1986, while recent legal battles in Europe have legalized its use in the Netherlands and Spain. In the United States, the Supreme Court in 2006 upheld a preliminary injunction permitting another Brazilian church, the União do Vegetal (UDV), to use ayahuasca ritually. This decision, as the result of specific litigation involving the UDV, applies only to that group, so the legal status of ayahuasca generally remains in a gray area in that country.