WASHINGTON — President Barack Obama on Saturday urged Congress to hold off on any investigation of the Fort Hood rampage until federal law enforcement and military authorities have completed their probes into the shootings at the Texas Army post, which left 13 people dead. On an eight-day Asia trip, Obama turned his attention home and pleaded for lawmakers to “resist the temptation to turn this tragic event into the political theater.” He said those who died on the nation’s largest Army post deserve justice, not political stagecraft. “The stakes are far too high,” Obama said in a video and Internet...