Which of the following can significantly reduce or enhance the presidential power

A. Public support
B. Rally events
C. Pocket vetos
D. Executive orders

All of the options A, B, C, and D can significantly reduce or enhance presidential power.

A. Public support: The level of public support can greatly impact a president's ability to accomplish their policy goals and maintain political power. A president with high public approval ratings can more easily build coalitions, induce congressional cooperation, and withstand political challenges.

B. Rally events: Presidential rallies and public appearances can rally public support and mobilize voters, strengthening a president's political appeal and leverage. These events often serve as platforms for the president to communicate their agenda and build momentum for policy initiatives.

C. Pocket vetos: Pocket vetos can significantly reduce presidential power by allowing the president to effectively kill a bill passed by Congress by simply refusing to sign it within the ten-day period when Congress is adjourned. This power limits congressional action and gives the president more control over the legislative process.

D. Executive orders: Executive orders can enhance presidential power by allowing the president to enact policy changes without congressional approval. These orders are binding directives that can shape government regulations and enforcement, bypassing the legislative process. Thus, they can be used to significantly enhance presidential power in certain policy areas.