President Trump announced Thursday he was pulling the nomination of Casey Means for surgeon general, attacking Sen. Bill Cassidy (R-La.) for blocking the pick from going through. Follow The Post’s live coverage of President Trump and national politics for the latest news and analysis In place of Means , Trump announced he would nominate Dr. Nicole Saphier for surgeon general — his third choice for the prestigious position after neither of the previous two even advanced to Senate votes. President Trump announced that he’s pulling the nomination of Casey Means (above) for surgeon general. CQ-Roll Call, Inc via Getty Images Meanwhile, the president will replace her nomination with Dr. Nicole Saphier — his third choice for the prestigious position after neither of the previous two even advanced to Senate votes. Getty Images In the first of a series of Truth Social posts, Trump said Cassidy, the chairman of the Senate Health, Education, Labor and Pensions (HELP) Committee “has stood in the way of Robert F.…