McALLEN, Texas (AP) — Authorities say there’s an active shooting situation at a mall in McAllen, Texas, and are warning the public to stay away. The Hidalgo County Precinct 4 constable’s office said on its Facebook page that a shooter was at the La Plaza Mall in McAllen, in the southernmost region of the state, just a few miles from the border with Mexico. Several law enforcement agencies have responded to the mall Saturday, including McAllen police, the Hidalgo Co...