Michelle .. halted private-jet traffic at Aspen airport as she landed for a weekend of skiing while President Obama headed to California. ... Mrs. Obama’s arrival amid tight security was expected to delay the arrival of other wealthy vacationers on private jets at the Colorado ski resort. One source said, “Some of those heading into Aspen were whining that they’re shutting the airport for an hour so nobody can get in on their private jets on a high travel day.” The weather in New York and in Aspen caused further delays ... Aspen airport’s director of aviation, Jim Elwood, declined...