A united conservative majority of the Supreme Court ruled Friday that federal judges lack the authority to grant nationwide injunctions, but the decision left unclear whether President Donald Trump’s restrictions on birthright citizenship could soon take effect in parts of the country. The outcome represented a victory for Trump, who has complained about judges throwing up obstacles to his agenda. Nationwide, or universal, injunctions had emerged as an important check on the Republican president’s efforts to expand executive power and remake the government and a source of mounting frustration to him and his allies.But the court left open the possibility that the birthright citizenship changes could remain blocked nationwide. Trump’s order would deny citizenship to U.S.-born children of people who are in the country illegally or temporarily.The cases now return […]