What has been a major trend in presidential control over foreign affairs since the Theodore Roosevelt administration?

The correct answer highlights the trend of increasing presidential power in foreign policy, particularly since the administration of Theodore Roosevelt. Under Roosevelt, the notion of a strong and assertive presidency emerged, especially in matters of international relations and military engagement. This period set a precedent for subsequent presidents to take a more active role in shaping and conducting foreign policy.

Presidents have increasingly utilized executive actions, such as executive agreements and military force, without needing explicit approval from Congress, thereby expanding their influence. The ability of presidents to respond quickly to international crises, execute treaties, and maintain extensive diplomacy has bolstered their position in foreign affairs over time. While Congress maintains some authority, particularly in terms of budgetary powers and declarations of war, the trend has clearly shown that presidents have grown more dominant and agile in navigating international issues.

Understanding this context helps illustrate why the assertion that presidential power in foreign policy has expanded is accurate, as it reflects a historical evolution in the dynamics of the executive branch concerning foreign affairs.