Will Section IV of the 25th Amendment be used during Trump's Presidency?

The event hinges on an extremely specific and politically severe mechanism: Section 4 requires the vice president and a majority of the principal officers of the executive departments to declare the president unable to discharge the powers and duties of the office. That makes this a very rare institutional outcome, not merely a question of whether the president becomes unpopular, controversial, or even temporarily impaired. Historically, the United States has never actually used Section 4, which suggests the default path in a crisis is still almost always informal pressure, resignation, impeachment, medical leave, or internal containment rather than formal constitutional removal.

Against that backdrop, the main argument for Yes is not that such a scenario is common, but that Trump’s political environment is unusually volatile and that a severe medical, cognitive, or operational crisis could create a plausible opening for a Section 4 attempt. If a future event sharply undermined confidence in his ability to govern, and if his cabinet were staffed with officials willing to act, the mechanism is legally available. The fact that the market question spans the remainder of the term also leaves enough time for an unexpected health event or major incapacity episode to occur.

Even so, the institutional hurdles remain enormous. Section 4 is designed for an extreme consensus among top executive officials, and in practice the political incentives to trigger it are close to prohibitive unless the evidence of incapacity is overwhelming and public. The market at 29% Yes looks somewhat high relative to the rarity of the mechanism and the difficulty of assembling the required coalition. My independent view is lower than the market, but not close to zero, because the long time horizon and the possibility of an acute crisis justify a nontrivial tail risk.