The writ of coram nobis is the proper application to request federal post-conviction judicial review for those who have completed the conviction's incarceration in order to challenge the validity of a federal criminal conviction. Decided January 4, 1954 (argued October 19, 1953). Opinion of the Court: Stanley Forman Reed → go there Dissenting: Minton. Topic: Other areas. United States v. Morgan, 346 U.S. 502 (1954), is a landmark decision by the United States Supreme Court which provides the writ of coram nobis as the proper application to request federal post-conviction judicial review for those who have completed the conviction's incarceration in order to challenge the validity of a federal criminal conviction. Wiki link