Since section 501(c)(3)'s political-activity prohibition was enacted, "commentators and litigants have challenged the provision on numerous constitutional grounds", such as freedom of speech, vagueness, and equal protection and selective prosecution.
Since section 501(c)(3)'s prohibition against political activity was enacted, various constitutional challenges have been raised by commentators and legal representatives, including arguments based on freedom of speech, vagueness, equal protection, and selective prosecution.