When Maryland Gov. Larry Hogan (R) announced the purchase of 500,000 coronavirus tests from South Korea last week, he called it “an exponential, game-changing step forward” in the state’s effort to get more people tested. The dramatic story drew notice from Democratic presidential candidate Joe Biden and a dismissive swipe from fellow Republican President Trump. But more than 10 days after the chartered Korean Air plane landed, Maryland has not allowed access to the tests kits, much to the frustration of local, state and federal leaders seeking to alleviate community testing shortages. "None of the kits have been deployed, and...