Statute treatment: 50 C.F.R. § 402.13

Ranked leading cases interpreting this statute, drawn from 241 citation events across 157 distinct cases.

241citations total

157distinct interpreting cases

39distinct courts

42citations in last 5y

1993–2026year range

Top 20 leading cases

#1 Karuk Tribe v. United States Forest Service (2012) ca9 150 own cites 4× in case

#2 Center for Biological Diversity v. United States Department of the Interior (2009) cadc 147 own cites 4× in case

#3 Medina County Environmental Action Ass'n v. Surface Transportation Board (2010) ca5 109 own cites 3× in case

#4 San Luis & Delta-Mendota Water v. Natural Resources Defense Coun (2014) ca9 204 own cites 2× in case

#5 Pacific Coast Federation of Fishermen's Associations v. U.S. Bureau of Reclamation (2001) cand 24 own cites 4× in case

#6 McConnell v. Federal Election Commission (2003) dcd 85 own cites 2× in case

#7 Conservation Congress v. United States Forest Service (2013) ca9 36 own cites 3× in case

#8 American Littoral Society v. United States Environmental Protection Agency Region (2002) njd 14 own cites 5× in case

#9 Conservation Congress v. Nancy Finley (2014) ca9 52 own cites 2× in case

#10 Friends of the Wild Swan v. Chip Weber (2014) ca9 147 own cites 1× in case

#11 Southern Utah Wilderness Alliance v. Smith (1997) ca10 50 own cites 4× in case

#12 National Wildlife Federation & Public Employees for Environmental Responsibility v. Federal Emergency Management Agency (2004) wawd 14 own cites 3× in case

#13 Forest Guardians v. Mike Johanns, Secretary of Agriculture United States Forest Service (2006) ca9 106 own cites 1× in case

#14 American Fuel & Petrochemical v. EPA (2019) cadc 24 own cites 2× in case

#15 Pacific Shores Subdivision California Water District v. United States Army Corps of Engineers (2008) dcd 8 own cites 4× in case

#16 Nat'l Wildlife Fed'n v. Nat'l Marine Fisheries Serv. (2018) ca9 80 own cites 1× in case

#17 Alliance for the Wild Rockies v. Christopher Savage (2018) ca9 21 own cites 2× in case

#18 Center for Biological Diversity v. EPA (2022) cadc 11 own cites 3× in case

#19 Turtle Island Restoration Network Center for Biological Diversity v. National Marine Fisheries Service (2003) ca9 71 own cites 1× in case

#20 Texas Independent Producers and Royalty Owners Association v. Environmental Protection Agency (2005) ca7 68 own cites 1× in case

Ranking method: leading_score = ln(1 + own_citation_count) × √(mentions_in_case) × flag_factor, where flag_factor = 1.0 green · 0.6 unknown · 0.5 neutral · 0.4 yellow · 0.3 procedural · 0 red. Red-flagged cases excluded — their interpretation has been undermined and shouldn't lead the list. Top 20 returned per statute. Open any case for full G Cite, trajectory, and per-circuit treatment.