Republican Party in Detroit nominated Ronald Reagan for US president.
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John Hinckley Jr., President Reagan's failed assassin, pleaded 'not guilty' due to not being mentally sound at trial.
The US Federal Government shut down for three days.
US President Ronald Reagan and Soviet leader Mikhail Gorbachev signed a treaty eliminating medium-range nuclear missiles.
John Hinckley, who tried to kill President Reagan, was found not guilty on the grounds of insanity.
Ronald Reagan challenges Mikhail Gorbachev to 'tear down this wall'.
