The term 'US Secretary of State' here refers to the state officials responsible for overseeing elections within their respective states, not the federal office. The question is based on the hypothetical scenario where a third legal or procedural challenge specific to Donald Trump's candidacy could lead to a third disqualification from a primary ballot. (In addition to Colorado or Maine) While no current public evidence suggests this is likely, this question considers unprecedented political dynamics leading up to the 2024 US Presidential Election.

The closing date of 1/15/24 is a few weeks before the first primaries are expected to begin, which would be the latest practical point for such a disqualification to take place.