Paul J. Weber | Associated Press

Texas Gov. Greg Abbott says Philadelphia will be the next destination for migrants the state is transporting from the U.S.-Mexico border by the thousands to Democratic-led locales.

Nearly 400 law enforcement officials rushed to a mass shooting at a Uvalde elementary school, but “systemic failures” created a chaotic scene that lasted more than an hour before the gunman who took 21 lives was finally confronted and killed, according to a report from investigators released Sunday.