Invasion USA

Oh Rio, Rio
Hear them shout across the land
From mountains in the north
Down to the Rio Grande
--Duran Duran

Invasion: an incursion by a large number of people or things into a place or sphere of activity. Synonyms: influx, inundation, flood, rush, torrent, deluge.

or, alternatively,

Invasion: an unwelcome intrusion into another's domain. Synonyms: violation, infringement, interruption, intrusion, encroachment, disturbance, disruption, breach.

An invasion is certainly taking place at our southern border. Bear in mind, however, that while today's events provide blatant images, this invasion has been going on for some time.