To be eligible for the presidency of the United States, Article II of the U.S. Constitution requires the person to be a citizen of the United States, at least 35-years-old, and reside in the U.S. for at least 14 years.

The only recent attempt to question a president's qualifications was Donald Trump's attack on President Barack Obama's birthplace, stating in 2011, "I'm starting to think that he was not born here." Trump claimed to have "an extremely credible source" who informed him that Obama's birth certificate was "a fraud." Trump called on Obama critics to "please hack Obama's college records (destroyed?) and check 'place of birth.'"

Now, as Trump seeks the presidency again, the shoe is in the other foot. But this time it's not a whacky conspiracy theory. This time, questioning Trump's qualifications is legitimate and convincing.  Lawyers, academics, and commentators have increasingly focused on the Constitution's text forbidding any person to hold federal or state office who engaged in an "insurrection or rebellion against the United States," or gave "aid and comfort" to others similarly engaged, and of Trump's role in fomenting the January 6 insurrection and his subsequent efforts to derail the 2020 election.  Section 3 of the Fourteenth Amendment states: