Experts worry as US virus restrictions are eased or violated

State and local officials around the U.S. are rolling back social-distancing rules again after an abortive effort over the summer, allowing bars, restaurants and gyms to open. Fans are gathering mask-free at football games. President Donald Trump is holding crowded indoor rallies. While some Americans may see such things as a welcome step closer to normal, public health experts warn the U.S. is setting itself up for failure again. “Folks are becoming very cavalier about the pandemic,” said Mark Rupp, professor and chief of infectious diseases at the University of Nebraska Medical Center. Nebraska’s governor ended nearly all of his state’s restrictions on Monday, even with new cases of the coronavirus on the rise.