A motion filed in the Fulton County “election interference” case against Donald Trump and 18 codefendants, also known as “The Fulton 19,” hasn’t garnered much attention but has the potential to upend the entire case. Meet Harrison Floyd. He fought for his country as a marine, interned at the Heritage Foundation, was a senior staff member on President Trump’s 2020 campaign, and led a nationwide effort known as “Black Voices for Trump.” He is also one of the defendants indicted last year, along with President Trump, by Fulton County District Attorney Fani Willis. Floyd was charged with a violation of...