on reconsideration. House Resolution 17735, known as the Gun Control Act, was signed into law by President Lyndon B. Johnson on October 22, 1968 banning mail order sales of rifles and shotguns and prohibiting most felons, drug users and people found mentally incompetent from buying guns. Prohibited persons The Gun Control Act of 1968 was amended in 1993 by the Brady Handgun Violence Prevention Act which introduced a background check requirement of prospective gun purchasers by licensed sellers, and created a list of categories of individuals to whom the sale of firearms is prohibited: With the following exceptions: (ii) A person shall not be considered to have been convicted of such an offense for purposes of this chapter if the conviction has been expunged or set aside, or is an offense for which the person has been pardoned or has had civil rights restored (if the law of the applicable jurisdiction provides for the loss of civil rights under such an offense) unless the pardon, expungement, or restoration of civil rights expressly provides that the person may not ship, transport, possess, or receive firearms. While many states upon completion of sentence automatically reinstate rights to vote, sit on a jury, or serve in public office, no states restore gun ownership rights upon completion of sentence. Some states reinstate rights depending on the crime convicted of, and others have a petition process. Those convicted of a federal offense must contact the Office of the Pardon Attorney, Department of Justice, to receive a presidential pardon. Under the Department's rules governing petitions for executive clemency, 28 C.F.R. §§ 1.1 et seq., an applicant must satisfy a minimum waiting period of five years before he becomes eligible to apply for a presidential pardon of his federal conviction. According to a 21 Sep 2011 "Open Letter to All Federal Firearms Licensees" from ATF, holders of state-issued medical marijuana cards are automatically "prohibited people" under 18 U.S.C 922 (g)(3) and "shipping, transporting, receiving or possessing firearms or ammunition" by a medical marijuana card holder is a violation. Additionally, 18 U.S.C 922 (x) generally prohibits people under 18 years of age from possessing handguns or handgun ammunition with certain exceptions for employment, target practice, education, and a handgun possessed while defending the home of the juvenile or a home in which they are an invited guest. The Brady Handgun Violence Prevention Act of 1993 created the National