Jonathan Allen and Brendan O'Brien

How Abrupt Immigration Ban Led to Confusion at Airports, Agencies

After immigration agents detained two Iraqis on Saturday at New York’s John F. Kennedy International Airport, their lawyers and two U.S. representatives accompanying them tried to cross into a secure area – and were stopped themselves. “Step back! Step back!” the agents shouted at them. A few minutes later, Heidi Nassauer, chief of passenger operations…