The Environmental Protection Agency $($EPA$)$ conducts a study on pollution in the Mississippi River and implements restrictions on companies in Arkansas and Louisiana, but not any on states upriver. Arkansas and Louisiana already have laws that address the issue and refuse to abide by the stronger restrictions, and they jointly and immediately file suit in federal court against the EPA. Included in the claim is a statement that the court should ignore the "facts" presented by the EPA because they are just a bunch of "tree huggers." Subsequently, a bill is presented in the U$.$S$.$ House of Representatives to de$-$regulate all waterways that would "undo" the EPA regulations.

Name and briefly describe any three issues that could arise from this fact pattern.