There are also many nondenominational Christian congregations. The percentage of Protestants is generally acknowledged to be growing, but reliable statistics are unavailable. Small numbers of non-Christian groups are present, including Jews, Muslims, Rastafarians, and Baha'is. Voodoo, a traditional religion derived in part from West African beliefs, is practiced alongside Christianity by a large segment of the population. While there are associations of voodoo practitioners and priests, there is no organized hierarchy or established voodoo church.
Foreign missionaries operate freely.
They enter on regular tourist visas and submit paperwork similar to that submitted by domestic religious groups in order to register with the Ministry of Religious Affairs. Many are affiliated with U.S.-based denominations or individual churches. Others are independent, nondenominational Christian groups. Missionary groups operate hospitals, orphanages, schools, and clinics throughout the country. U.S. churches often send teams to Haiti on short-term projects.