The National Rifle Association (NRA) has joined other gun lobbying and advocacy groups that are typically aligned with Donald Trump in calling for the Republican president’s administration to conduct a “full investigation” into the killing of Alex Pretti, the 37-year-old nurse who was shot dead by federal immigration officials in Minneapolis on Saturday. Pretti was reportedly legally permitted to carry a gun and is a citizen of the US, where it is a constitutional right to bear arms. Widely circulated video of his shooting death does not depict him ever holding a gun. It does show an officer reaching to...