U.S. Secretary of State Hillary Clinton (R) shakes hands with Mexican Foreign Secretary Jose Antonio Meade at the Department of State in Washington D.C., capital of the United States, Jan. 30, 2013. It was the last bilateral meeting for Hillary Clinton as Secretary of State. (Xinhua/Zhang Jun)

U.S. Secretary of State Hillary Clinton (R) walks to the media with Mexican Foreign Secretary Jose Antonio Meade at the Department of State in Washington D.C., capital of the United States, Jan. 30, 2013. It was the last bilateral meeting for Hillary Clinton as Secretary of State. (Xinhua/Zhang Jun)

U.S. Secretary of State Hillary Clinton (R) speaks with Mexican Foreign Secretary Jose Antonio Meade at the Department of State in Washington D.C., capital of the United States, Jan. 30, 2013. It was the last bilateral meeting for Hillary Clinton as Secretary of State. (Xinhua/Zhang Jun)

U.S. Secretary of State Hillary Clinton (R) speaks with Mexican Foreign Secretary Jose Antonio Meade at the Department of State in Washington D.C., capital of the United States, Jan. 30, 2013. It was the last bilateral meeting for Hillary Clinton as Secretary of State. (Xinhua/Zhang Jun)