sentences:  Exceptions to the ban were allowed for police officers and guns registered before 1976.The law also required firearms kept in the home to be "unloaded, disassembled, or bound by a trigger lock or similar device"; this was deemed to be a prohibition on the use of firearms for self-defense in the home.On June 26, 2008, in the historic case of "District of Columbia v. Heller", the Supreme Court of the United States determined that the ban and trigger lock provisions violate the Second Amendment.