Reporter John Otis catches up with one Colombian mayor who faces so many threats from criminal groups — that he's been forced to govern — largely from exile.
Venezuela is holding a presidential election on Sunday that could bring dramatic change to the nation, if the opposition candidate can really knock out longtime President Nicolás Maduro.
About 7.7 million Venezuelans have fled to escape poverty and political turmoil -- about one-fifth of the country's population. It's now a potent issue in Venezuela's presidential election.