Mike the Mad Biologist reminds us of Section 3 of the 14th Amendment.
If I were a member of the House or the Senate, I’d introduce a bill to remove the disability and see whether it gets a two-thirds majority in both houses. That probably wouldn’t stop Trump because, even if the bill failed, we’d still need a finding that Trump engaged in insurrection or gave aid or comfort to those who did. It would likely make the news, however; and that would be fun. 😎