(case involves plaintiff's pre-enforcement challenge to anti-animal-fighting provisions of Animal Welfare Act (AWA) as unconstitutional - provisions constitute bill of attainder, violate principles of federalism, and violate plaintiffs' First Amendment right of association and right to travel and Fifth Amendment right to due process for deprivations of property and liberty; court affirms trial court's dismissal of plaintiffs' claims - plaintiffs did not allege any present or future economic loss due to foregone revenues from Louisiana where cockfighting was legal at time case brought; risk of wrongful prosecution mere speculative; AWA does not impose penalties without a judicial trial and is not a bill of attainder; any injury is to impacted states and their citizens in general, thus plaintiffs did not personally suffer a federalism violation).