The Trump administration has invoked a 227-year-old law, the Alien Enemies Act, to target Tren de Aragua, a gang with its roots in the prisons of Venezuela. Who are they and how wide is their reach?

Tren de Aragua, a gang born out of a Venezuelan prison, is a loose network that doesn’t operate like groups typically considered terrorist organizations.

President Donald Trump on Saturday invoked a little-used wartime law to expedite the deportation of alleged members of the Venezuelan gang Tren de Aragua, saying the country was facing an "invasion" from a criminal organization that has been linked to kidnapping,