The Dominican Republic has historically granted extensive religious freedom. According to the United States Department of State, "The constitution specifies that there is no state church and provides for freedom of religion and belief. A concordat with the Vatican designates Catholicism as the official religion and extends special privileges to the Catholic Church not granted to other religious groups. These include the legal recognition of church law, use of public funds to underwrite some church expenses, and complete exoneration from customs duties." In the 1950s restrictions were placed upon churches by the government of Trujillo. Letters of protest were sent against the mass arrests of government adversaries. Trujillo began a campaign against the Catholic Church and planned to arrest priests and bishops who preached against the government. This campaign ended before it was put into place, with his assassination.