The First Amendment prohibits the government from abridging free speech. In determining whether speech by a public employee is protected, the question is whether the employee spoke as a citizen on a matter of public concern. If the answer is no, the government has broader discretion to restrict the speech, similar to a private employer. If the individual spoke as a citizen on an issue of public concern, the government can restrict speech only to the extent necessary to ensure the efficient and effective operation of the employer. In Garcetti v. Ceballos, 547 U.S. 410 (2006), the U.S. Supreme Court held that a district attorney's memorandum outlining his concerns with a search warrant did not constitute protected speech, and thus his termination was not an abridgement of free speech, because the memorandum was written in the course of his official job responsibilities.