DALLAS (AP) — FBI officials said Wednesday that the investigation into the November death of a U.S. Border Patrol agent has yielded no evidence that there was a "scuffle, altercation or attack" more than two months after President Donald Trump and others used the suggestion of an attack to promote the building of a wall along the U.S.-Mexico border. Investigators have conducted more than 650 interviews and involved 37 field offices in their probe, but have not found definitive evidence of an attack, the FBI said in a statement.