U.S. face Argentina in bid to extend unlikely Copa run (Reuters)

(Reuters) - Prior to the start of the Copa America, United States coach Juergen Klinsmann had set the semi-finals as a target but will now need a new goal as the hosts prepare to take on top-ranked Argentina for spot in the final. After an opening 2-0 loss to Colombia a last-four appearance seemed a lofty objective but Klinsmann's squad responded with wins against Costa Rica, Paraguay and Ecuador to set up a clash against the South American giants in Houston. The United States will enjoy home-field advantage on Tuesday but that is likely to be the only thing in their favor as they take on the world's top-ranked team led by the world's best player in Lionel Messi.