What is one purpose of presidential veto power?

The purpose of presidential veto power primarily serves as a mechanism to provide a check on Congressional power. This power allows the president to refuse to sign legislation passed by Congress, effectively preventing it from becoming law. The concept of checks and balances is fundamental to the U.S. political system, designed to ensure that no single branch of government becomes too powerful. When the president issues a veto, it not only signals disagreement with a proposed law but also compels Congress to reconsider its position, potentially modifying the legislation or advocating more thoroughly for its approval. This interaction helps maintain a balance between the legislative and executive branches, ensuring that both have a role in the law-making process.