The Supreme Court ruled in favor of the Trump administration on Friday night in a case that contested the president’s “public charge” rule, which critics have called a “wealth test” for legal immigrants. The policy in question, the Immigration and Nationality Act, would make it harder for immigrants who are “likely at any time to become a public charge” to obtain green cards. The policy discourages legal immigrants in the process of obtaining permanent legal status or citizenship from using public assistance, including Medicaid, housing vouchers and food stamps. The case heard by the court, Wolf v. Cook County, sought...