Michelle Obama slipped into diplomat mode Tuesday, making a surprise stopover in Haiti, the earthquake-wrecked nation. The first lady was scheduled to travel to Mexico, where she will arrive later in the day, for a three-day visit—her first official solo journey abroad since her husband took office. The East Wing released a statement saying Obama, accompanied by Jill Biden, was visiting to show support for humanitarian efforts. They are expected to make a stop at a children’s hospital and meet with Haiti’s president. The White House has pledged $2.8 billion to Haiti for recovery. In Mexico, Obama will meet with President Felipe Calderon and his wife Margarita Zavala.