I will be frank.
It's geopolitics. A lot of these TPP countries, including Vietnam, which is communist, are afraid of mother China. There's a massive number of border settlement problems, the islands, or whatever. There is even conflict between Taiwan and China. So the geopolitics—the U.S. Navy, the 5th Fleet—has a lot to do with it, as you know, in the United States, with their bases in Japan.
That paints the issues, if you want to call them that. Therefore, the United States gets away with a lot, even though they don't have a mandate.