If you are an Ohio Honda Associate, you are a working man-prince, with great pay, fabulous benefits, REALLY fabulous benefits, bonuses, stock options, education, pension etc etc
But you are working next to Joe Bagadonutz, he's 45, a highly skilled worker doing exactly what you are doing, he gets $13.50-15.00/hour, (thats 60% less than you) NO (ZIP)benefits, and his hours per year are strictly limited. There is absolutely NO WAY for Joe to become an Honda Associate, even if every supervisor in the plant asks for him.
You are talking about 35% of the Honda work force. His paymaster is a temp agency that is owned 40% by Honda. And of course, he gets no vote in the union/no union election.
Rather than increase the official work force, Honda moves about the country looking for poverty pockets (make that White poverty pockets, because the Japanese are generally xenophobic to begin with, and can be quite overtly racist)and repeats the process. Sooner or later, some union will capitalize on this opening. It's a bit of a rock no one wants to look under.