Goldwater v. Carter: Foreign Policy, China, and the Resurgence of Executive Branch Primacy by Joshua E. Kastenberg
Goldwater contended that if Carter could withdraw from the treaty with Taiwan, then another president could theoretically withdraw from NATO and thereby endanger the global political order. Ironically, years later President Donald Trump, who stood in the mold of Goldwater's brand of conservatism, posed this very threat.
Joshua Kastenberg places the case of Goldwater v. Carter in the larger context of executive power. While presidential power had increased in the wake of FDR's New Deal, Congress curbed this expansion during the Vietnam conflict, placing restrictions on the presidency in areas of foreign policy and national security that had not been seen since the defeat of the League of Nations in the Senate in 1919. The Court's decision in favor of Carter, however, marked a return to the growth of the imperial presidency, which has only continued to expand.