As the number of U.S. coronavirus deaths surpasses 200,000, public-health experts point to a series of missteps and miscalculations in the country’s response. Here’s a look back at how the U.S. became the center of the global pandemic. Photo Illustration: Carter McCall/WSJ New coronavirus cases in the U.S. continued to climb, driven by renewed outbreaks in several states, as the nation’s total number of cases topped 7.6 million. The U.S. reported more than 56,000 new cases for Thursday, the highest daily total since mid-August, according to data compiled by Johns Hopkins University. The country’s death toll neared 213,000. Wisconsin…