It's a shame someone would equate this film to a propaganda reel. Unnecessary jingoism was part of American culture at the time. Only three brief instances of possible propaganda exist here -- 1) when our protagonist says he wouldn't want to join the New World Order because he doesn't like their tactics. Saying that is a bad thing? I guess it was not fair since we didn't get a Nazi response to how their way of life really is. 2) the quote over the intercom "You know what to do, boys" when the air squadron heads out for a combat mission. Unnecessary cheerleading in a movie, yes, but part of American film culture at the time. 3) at the end, when our antagonist becomes an American citizen, he says "We know our way of life is best, and we're fighting to keep it that way." Again, should the movie have been fair to Nazis by giving their point of view on their way of life? Seriously?!? Sometimes we know wrong is wrong and there doesn't need to be a defense of it. Therefore, not propaganda.
Lastly, this movie does NOT defend the right to be an illegal alien. Nothing is illegal about our antagonist. He's a legal alien but not a citizen. Illegal status never once enters the conversation.
Overall, an okay, swift moving crime/war drama that isn't very memorable but definitely not a terrible 76 minutes.