While psychedelics remain mostly illegal around the world, the policies surrounding these substances are quickly changing. In the U.S., all psychedelics, except ketamine (primarily considered a dissociative) are on Schedule I of the Controlled Substances list, and federally illegal. That said, in different localities at the municipal, county, and state levels, certain naturally occurring psychedelic substances, like psilocybin mushrooms, mescaline, and ibogaine,, are decriminalized for personal possession. In other cases, jurisdictions like the state of Oregon, have decriminalized all drugs, including psychedelics like MDMA and LSD, along those that are naturally occurring. At the federal level, MDMA and psilocybin-assisted therapies  are completing Phase 3 clinical trials that could lead to them being rescheduled. In some cases, psychedelics like ayahuasca or peyote are legal for religious use for particular groups, under religious exemption and protection policies.