The Comics Code Authority was formed in 1954 by the Comics Magazine Association of America as an alternative to government regulation, to allow the comic publishers to self-regulate the content of comic books in the United States. Its code, commonly called "the Comics Code," lasted until the early 21st century. Many have linked the CCA's formation to a series of Senate hearings and the publication of psychologist Fredric Wertham's book Seduction of the Innocent.