Anglers are obsessed with water. Freshwater, saltwater, moving water, still water; it matters not. We peer from car windows as we speed across bridges, staring down in wonder at even the most unimpressive of trickles. We yearn not only to see water, but to know and explore it, to discover what quarry swims in it. We’re compelled to protect and preserve it, to stand in the way of those that would harm or endanger it. And now more than perhaps any time in a generation, the waters of our United States, which so often preoccupy our minds, face a grave and serious threat.