Laura Loomer, a right-wing provocateur and prominent supporter of President Trump, has set her sights on Dr. Casey Means, the physician-turned-wellness influencer who Trump tapped as his new nominee to be U.S. surgeon general on Wednesday. In a series of posts on social platform X that began shortly after Trump’s announcement, Loomer accused the president’s advisers of poor vetting and attacked Means’s background. This is honestly insane,” she wrote in one post Thursday morning. “I do not believe for one second that Donald Trump made this decision. I refuse to believe it.” Loomer went on to label chronic-disease entrepreneur Means,...