Legal experts questioned the president’s response to unrest in Los Angeles, saying the military personnel involved will face strict limitations under the law.President Donald Trump’s order to deploy 2,000 California National Guard troops to Los Angeles is unprecedented, relying on an unorthodox use of a law aimed at quelling serious domestic unrest or an attack on the United States by a foreign power, some legal experts said Sunday.Trump invoked a section of the Armed Forces Act that allows the president to bypass a governor’s authority over the National Guard and call those troops into federal service when he considers it...