Trump has been promising to release his medical report since 2016, but like his taxes, has yet to do it willingly. In contrast, Vice President Kamala Harris released a glowing medical report from an accredited doctor stating she is in excellent health.

VP Harris Releases Glowing Health Report in Contrast to Trump's Secrecy

Ex-president Donald Trump keeps promising to release his medical report, but has yet to do it.  In contrast, Vice President Kamala Harris released a glowing medical report from an accredited doctor.

Trump's behavior. As for Joey Biden, it's evident that his mental competence has been a subject of concern, and it would be in Trump's best interest to refrain from pretending otherwise.