Why Was The Monroe Doctrine Issued. 13 Jul, 2012 why was 0. The Monroe Doctrine is a policy that was introduced by the President James Monroe in 1823 in his seventh State of the Union Address to the Congress.he doctrine has been invoked many times since 1823 and is considered to be one of the most important developments in U.S. foreign policy. Let’s find out the circumstances that led to this doctrine being issued.