Before leaving Washington, President Obama spoke for the first time about former President Clinton's trip to North Korea. He said he was "extraordinarily relieved" at the release of the two U.S. journalists, and has spoken with their families. He's also spoken with Clinton, he said.

"I want to thank President Bill Clinton ... for the extraordinary humanitarian effort that resulted in the release of the two journalists," he said. "I think that not only is this White House obviously extraordinarily happy, but all Americans should be grateful to both former President Clinton and Vice President Gore for their extraordinary work. And my hope is, is that the families that have been reunited can enjoy the next several days and weeks, understanding that because of the efforts of President Clinton and Gore, they are able to be with each other once again."