Give an example of how Hugo Chavez opposes US policy toward Latin America.

Hugo Chavez basically opposes everything the US does
anywhere in the world.  In Latin America, the most prominent example of a policy that he
opposes is the US policy of trying to isolate Cuba.

Ever
since 1960, soon after Fidel Castro's revolution, the US has imposed a trade embargo on
Cuba.  The US wants to isolate Cuba both economically and politically as a way of
putting pressure on the Castro regime.  Chavez is a close ally of Castro and sees Castro
as something of a role model because Chavez also wants to bring a socialist system to
his country.  Because of this, Chavez has opposed the US policy of isolating Cuba.  He
has done so, for example, by selling oil to Cuba at low prices.  In exchange, Cuba sends
health care workers to help Venezuela.  This is the most prominent example of Chavez
opposing US policy in Latin America.