Which of the following is a power exclusively reserved for Congress regarding legislation?

The power to override a presidential veto is exclusively reserved for Congress, reflecting the system of checks and balances that defines the relationship between the legislative and executive branches of the government. This process allows Congress to maintain legislative authority even in the face of a presidential objection. If a president vetoes a bill, Congress can still enact that bill by securing a two-thirds majority vote in both the House of Representatives and the Senate. This mechanism ensures that while the president has significant influence over legislation, Congress retains the ability to assert its legislative power and is a critical component of the legislative process.

The other options do not reflect powers that are exclusive to Congress. Creating executive orders is an authority granted to the president, allowing for direct executive action without legislative approval. Confirming judicial appointments is a power held by the Senate specifically, and while it involves legislative action, it is not a power exercised by Congress as a whole. Implementing budgets involves administrative actions that fall under the responsibilities of the executive branch, even though Congress is responsible for drafting and passing budget legislation.