The Trump administration defends its revised travel ban at the U.S. Court of Appeals for the 4th Circuit. The case before the 4th Circuit is on track to be the first legal challenge to reach the Supreme Court on the revised travel ban. Trump's revised order signed March 6 would stop the issuance of new U.S. visas to travelers from Iran, Libya, Somalia, Sudan, Syria and Yemen for three months, suspend refugee inflows for four months and cut annual refugee admissions by half. At stake is one of Trump's big policy moves on a campaign promise to close down the United State's borders to the country safer from terrorists.