Invasion U.S.A. can be mistaken for an 80s fear-mongering, right-wing propaganda effort, but if that is the case...it's a bloody enjoyable one.
Invasion U.S.A. hasn't got all that much of a story. It's more like a number of action sequences stringed together to make up a movie, and the main "hero" is a one-dimensional war machine. I guess when viewing a Gannon feature, it's unavoidable. Even more so when the lead is played by "stone-face" himself. This doesn't mean you can't enjoy this film. It just means you have to be in the right mindset before viewing.
I enjoyed Invasion U.S.A. but be aware it's an acquired taste.