Men in Black (1997)

After a police chase with an otherworldly being, a New York City cop is recruited as an agent in a top-secret organization established to monitor and police alien activity on Earth: the Men in Black. Agent Kay and new recruit Agent Jay find themselves in the middle of a deadly plot by an intergalactic terrorist who has arrived on Earth to assassinate two ambassadors from opposing galaxies.

Plot Keywords: secret identity, undercover, space marine, illegal immigration, deportation, new identity, giant cockroach, cannon, flying saucer, stay permit, alien, fictional government agency