NO EFFECT ON UPPER BASIN.

SEC. 203. NO EFFECT ON UPPER BASIN. Nothing in this Act shall amend, construe, supersede, or preempt any State law, Federal law, interstate compact, or international treaty pertaining to the Colorado River (including its tributaries) in the Upper Basin, including, but not limited to the appropriation, use, development, storage, regulation, allocation, conservation, exportation, or quality of those rivers.