A federal court in Argentina called for the arrest of Maduro for alleged crimes against humanity in dealing with protesters after Venezuela's election.

More than a decade after Tren de Aragua formed, the gang has become a menace even on American soil and has exploded into the U.S. presidential campaign.

After the July 28 presidential elections, the Venezuelan government has carried out a massive wave of arrests and repression.

Law enforcement authorities across the U.S. are increasingly focused on a Venezuelan gang behind a spate of violent crimes.