26th amendment By Raghadahmad Period: Jun 22, 1962 to Aug 2, 2000 Cuban missile crisis Period: Aug 7, 1964 to Oct 22, 2000 Gulf of Tonkin resolution Period: Feb 24, 1969 to Mar 5, 1990 court case tinker vs des moines Period: Nov 1, 1971 to Dec 4, 2000 war powers Act amendment 26th