MEXICO CITY — The action may be on the streets of Los Angeles, but fallout from the immigrant protests is roiling politics in Mexico at a delicate moment — days before Mexican President Claudia Sheinbaum is expected to meet President Trump in their much-anticipated inaugural face-to-face encounter.Sheinbaum has been on the defensive since Homeland Security Secretary Kristi Noem — at an Oval Office event in Trump’s presence — accused the Mexican president on Tuesday of “encouraging violent protests.” While Sheinbaum has assailed the U.S. immigration raids and backed immigrants’ rights to protest, there is no public record of her ever...