How is the President's veto power best described?

The description of the President's veto power is best captured by noting that Congress is usually unable to override a President's veto. This highlights the significant authority the President holds in the legislative process. When the President vetoes a bill, that decision sends a strong signal to Congress about the President's priorities and policy preferences.

The Constitution allows Congress to override a veto, but this requires a two-thirds majority in both the House of Representatives and the Senate, which is a challenging threshold to meet. Historically, overrides are rare, and this underscores the effectiveness of the veto as a tool for the President to exert influence over the legislative agenda.

In contrast, while it is true that Presidents may threaten to veto bills (which can influence congressional decision-making), or that some legislation may not receive a veto due to a variety of strategic reasons, these points do not represent the fundamental nature of the veto power itself. Additionally, the veto power does not apply to all legislation passed by Congress; for instance, certain resolutions and appointments may not be subject to the veto process, making the assertion that it applies universally inaccurate. The emphasis on Congress's difficulty in overriding a veto encapsulates the power dynamics between the executive and legislative branches effectively.