What is Tren de Aragua and has the group 'invaded' the United States?

Trump has fixated on the Venezuelan gang, but experts say he's concocted a bogeyman to fuel immigration crackdowns The Trump administration has fixated on portraying a Venezuelan gang called Tren de Aragua, or TdA, as a state-sponsored international terrorist organization that has invaded the US. Donald Trump uses the argument to justify extreme enforcement measures against Venezuelan immigrants and cast a cloud across the Venezuelan diaspora, especially communities in the US.