On December 13, 1979, the Supreme Court vacated and dismissed, on political question and ripeness grounds, a suit by several members of Congress challenging President Carter's unilateral termination of the 1954 Mutual Defense Treaty between the United States and the Republic of China (ROC). Although six members of the Court concurred in the dismissal, no single rationale garnered a majority vote.
Covey T. Oliver,
Goldwater v. Carter: Crisis in American Constitutional Arrangements for the Conduct of International Relations,
Yale J. Int'l L.
Available at: http://digitalcommons.law.yale.edu/yjil/vol6/iss1/3