Fairly straightforward. Has to be required on an ongoing basis, not just during a brief hospitalization. Reputable sources yada yada. My yardstick for when someone is perhaps a little too far gone to be president.

Will keep it open a few months into 2029 to give that sweet post-presidency inside dig time to come out, but will resolve No if nothing is out yet. Has to have happened on or before December 31, 2028.