Gonzalo Higuain scored twice , Lionel Messi added his team - leading fifth goal .
Gonzalo Higuain had two assists and Argentina routed the United States 4 - 0 in the Copa America semifinals on Tuesday night in Houston .
Gonzalo Higuain scored twice , Lionel Messi added his team - leading fifth goal and had two assists and Argentina routed the United States 4 - 0 in the Copa America semifinals on Tuesday night in Houston .