When Donald Trump contracted the Covid-19 virus in October, he was medevac’d by helicopter to Walter Reed National Military Medical Center where a team of 12 doctors monitored his vital signs, supplied him with supplemental oxygen, injected him with Remdesivir, a viral inhibitor, and gave him Regeneron, an experimental antibody cocktail not yet approved for general use. Mr. Trump recovered from the virus at an estimated cost of $100,000 not counting the helicopter ride to and from the White House. American taxpayers paid for all of it.