Flags at the White House and all other federal buildings will be flown at half-staff in honor of the Nashville shooting victims through Friday, under a new order from President Biden. The declaration came Monday after the commander-in-chief lamented the massacre that claimed the lives of three young children and three adults at the Covenant School. The shooter was killed by police. The mass shooting was “a family’s worst nightmare,” Biden told reporters. “We have to do more to stop gun violence. It’s ripping our communities apart,” he said. “It’s ripping at the very soul of the nation. We have...