A judge on Tuesday blocked President Joe Biden’s COVID-19 vaccine mandate for federal contractors, finding that Biden likely lacks the authority to force them to get vaccinated. “This is not a case about whether vaccines are effective. They are. Nor is this a case about whether the government, at some level, and in some circumstances, can require citizens to obtain vaccines. It can,” U.S. District Judge Gregory Van Tatenhove, a George W. Bush nominee, wrote in the 29-page order. “The question presented here is narrow. Can the president use congressionally delegated authority to manage the federal procurement of goods and...