Safeguard ABM system

"As a result of the Antiballistic Missile Treaty of 1972, the United States developed the Safeguard ABM system and deployed a limited number of missile interceptors around its intercontinental ballistic missile (ICBM) silos in North Dakota while the Soviet Union deployed its limited ABM assets around its national command authority in Moscow." 

Cost and "technology woes" plagued Safeguard. Donald Rumsfeld, the former GOP "Congressman from Illinois, knew it. Even worse, the Soviets were rendering Safeguard useless by putting multiple warheads atop each of their missiles. After three months as Defense Secretary, under orders from Congress, Rumsfeld shut it down." 

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