In 1964, Evans spoke at a "Project Prayer" rally attended by 2,500 at the Shrine Auditorium in Los Angeles. The gathering, which was hosted by actor Anthony Eisley, star of ABC's "Hawaiian Eye" series, sought to flood the United States Congress with letters in support of mandatory school prayer, following two decisions in 1962 and 1963 of the United States Supreme Court which struck down mandatory prayer as conflicting with the Establishment Clause of the First Amendment to the United States Constitution.