Wicca been influenced by other Pagan religions, thus making clear-cut distinctions between them more difficult for religious studies scholars to make. The terms "wizard" and "warlock" are generally discouraged in the community. In Wicca, denominations are referred to as "traditions", while non-Wiccans are often termed "cowans". When the religion first came to public attention, it was commonly called "Witchcraft". For instance, Gerald Gardner—the man regarded as the "Father of Wicca"—referred to it as the "Craft of the Wise", "witchcraft", and "the witch-cult" during the 1950s. There is no evidence that he ever called it "Wicca", although he did refer to the
Religion in the United States parents and partners, Earth-centered/Wicca, and Buddhist meditation adherents. The First Amendment guarantees both the free practice of religion and the non-establishment of religion by the federal government (later court decisions have extended that prohibition to the states). The U.S. Pledge of Allegiance was modified in 1954 to add the phrase "under God", in order to distinguish itself from the state atheism espoused by the Soviet Union. Various American presidents have often stated the importance of religion. On February 20, 1955, President Dwight D. Eisenhower stated that "Recognition of the Supreme Being is the first, the most basic, expression of Americanism."