motion under Section 2255
Defined in 1 dictionary — Case Law
Definitions from Case Law
United States Supreme Court
Unlike the criminal trial where the guilt of the defendant is in issue and his presence is required by the Sixth Amendment, a proceeding under Section 2255 is an independent and collateral inquiry into the validity of the conviction.
Defined by the Supreme Court in - United States v. Hayman, 342 U.S. 205 (1952).