One of the VERY few things with higher standing in federal law than the Endangered Species Act is treaties. The Mitchell Act hatcheries are critical to providing salmon for tribal harvest, and courts to date have affirmed that the federal treaty obligation includes ensuring an adequate quantity of fish for treaty fishermen in their U&A areas. The WFC may be able to affect HOW the Mitchell Act hatcheries produce fish in the interest of ESA listed species, but I don't believe ESA can undermine the obligation to produce hatchery fish for harvest.