The U.S. President holds no absolute supreme power, for the nation’s Constitution deliberately divides governmental power among three equal branches via the checks-and-balances mechanism, stopping any single branch from gaining overwhelming dominance. Though the U.S. president enjoys substantial authority as military commander-in-chief, top diplomat and executive leader — including the right to veto bills, nominate federal judges and cabinet members, and sign executive orders — such power is tightly restricted by Congress. Congress holds sole rights to make laws, levy taxes and allocate government funds; it can also impeach the president, override presidential vetoes with a two-thirds majority vote, and approve or reject official nominations. The judicial branch imposes further restraints by judging whether executive moves violate the Constitution. Typical examples include the Supreme Court overturning President Truman’s steel mill takeover in 1952, and district courts blocking immigration-related executive orders. Additionally, the president is banned from declaring wars or allocating public funds without congressional approval, while state governments keep substantial independent domestic policy power under the federal system. In reality, presidential power shifts greatly with political contexts: unified partisan governance and public emergency mandates allow presidents to take bold actions especially during wars or national crises, whereas split legislatures, changing public opinions and institutional opposition can hinder presidential agendas. For instance, numerous U.S. presidents failed to pass sweeping immigration reforms. To sum up, the American constitutional system disperses instead of centralizes state power, so the president is a powerful yet bounded ruler. Therefore, there is no fixed answer to which party owns the supreme power, and this issue depends on real political situations.
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