The Trump administration has asked the Supreme Court to restore the ban on travel to the U.S. from citizens of six Muslim-majority countries.
Per Reuters: "The administration filed two emergency applications with the nine Court justices seeking to block two different lower court rulings that went against Trump's March 6 order barring entry for people from Iran, Libya, Somalia, Sudan, Syria and Yemen for 90 days while the U.S. government implements stricter visa screening."
Last week, an appeals court in Richmond upheld the block on Trump's order. Chief Judge Roger Gregory ruled that it, "speaks with vague words of national security, but in context drips with religious intolerance, animus, and discrimination." There have been conflicting rulings on the order, and on Trump's earlier attempt to implement the ban, as it has worked its way though the courts.