A growing number of Republican senators are calling for an investigation into the killing of Alex Pretti in Minneapolis as many Trump administration officials defend federal officers’ actions. Sens. Bill Cassidy of Louisiana, Susan Collins of Maine, Mike Crapo of Idaho, John Curtis of Utah, Jerry Moran of Kansas, Lisa Murkowski of Alaska and Thom Tillis of North Carolina have all said there needs to be a thorough probe into Saturday's fatal shooting of Pretti, a U.S. citizen, by Border Patrol. Administration officials overseeing immigration enforcement may soon face public scrutiny from Republicans and Democrats alike. Sen. Rand Paul, R-Ky.,...