President Donald Trump has threatened to bring the full power of the U.S. Federal Communications Commission against NBC News’ Meet the Press moderator Kristen Welker over a comment made about his influence in the electorate, marking the first time he’s wielded the power of a U.S. agency to threaten an individual journalist by name. Welker’s comment was made not on Meet the Press but while on local Washington, D.C. affiliate WRC-TV. The 20-year veteran broadcast journalist said of Trump: “He’s going to loom large over these midterms. There’s no doubt about that. He, of course, has endorsed a slate of candidates in the primaries. He’s had…