Speaking of the incipient indictment of Donald Trump, I see in comments the following regarding his campaign.
If he is convicted of a crime, any crime, they can use that to prevent him from running.
I'm not sure about that. The qualifications for President are set out in Article 2, Section 1 of our Constitution.
No Person except a natural born Citizen, or a Citizen of the United States, at the time of the Adoption of this Constitution, shall be eligible to the Office of President; neither shall any Person be eligible to that Office who shall not have attained to the Age of thirty five Years, and been fourteen Years a Resident .
Natural born, 35 years. I don't see anything there about conviction. If I am in error, please correct me, but I don't believe that a conviction is an impediment to holding the office.