852 F.3d 444
5th Cir.2017Background
- After the 2003 Iraq invasion USACE contracted KBR under Project RIO to restore the Qarmat Ali water‑injection facility; KBR began work after USACE authorized site operations.
- The pre‑KBR operator used sodium dichromate (hexavalent chromium) at Qarmat Ali; plaintiffs (U.S. and U.K. servicemembers assigned to protect KBR personnel) allege exposure from soil/air contamination and report acute symptoms and later illnesses including one death from lung cancer.
- Plaintiffs sued KBR in the Southern District of Texas for negligence, gross negligence, fraud, and IIED, claiming KBR failed to identify, contain, or warn about chromium contamination.
- The district court granted summary judgment for KBR, finding plaintiffs failed to establish causation (both general and specific) as required under Texas law. Plaintiffs appealed; KBR also raised political‑question and preemption defenses.
- The Fifth Circuit held the claims are justiciable (political‑question doctrine did not bar suit) but affirmed summary judgment because plaintiffs’ scientific evidence did not meet Texas’s Havner standards for proving general causation.
Issues
| Issue | Plaintiff's Argument | Defendant's Argument | Held |
|---|---|---|---|
| Political‑question/justiciability | Suit targets private contractor misconduct; court can adjudicate without second‑guessing military decisions | Adjudication would require reexamining military deployment/decisions and is thus a non‑justiciable political question | Claims are justiciable; political‑question doctrine does not bar the case |
| General causation (can chromium cause claimed injuries?) | Experts and epidemiological studies show chromium can cause irritation and cancer; expert testimony supports risk | Plaintiffs’ epidemiological evidence fails Havner’s doubling‑of‑risk threshold; experts lack quantitative dose‑response data | Plaintiffs failed to produce Havner‑compliant epidemiology showing statistically significant doubling of risk; general causation not established |
| Specific causation (did exposure cause these plaintiffs’ injuries?) | Drs. Carson and Gibb linked plaintiffs’ symptoms to exposure; Carson performed differential diagnosis and exposure‑category analysis | Experts lacked reliable dose estimates; Carson’s exposure categories were based on self‑reported time and no quantitative dose, so methodology is unreliable | Specific causation not established because general causation was not reliably shown and expert methodology was insufficient |
| Use of differential diagnosis and lay testimony | Differential diagnosis and contemporaneous lay symptom reports suffice to show causation for acute effects | Differential diagnosis presumes general causation; lay‑testimony argument was not raised below (forfeited) | Differential diagnosis cannot substitute for reliable general‑causation proof; lay‑testimony argument forfeited; summary judgment affirmed |
Key Cases Cited
- Baker v. Carr, 369 U.S. 186 (political‑question doctrine framework)
- Nixon v. United States, 506 U.S. 224 (political‑question doctrine limits)
- Zivotofsky v. Clinton, 566 U.S. 189 (textually demonstrable commitment and judicially manageable standards discussion)
- Lane v. Halliburton, 529 F.3d 548 (5th Cir.) (military‑contractor suits and political‑question analysis)
- Anderson v. Liberty Lobby, 477 U.S. 242 (summary judgment/genuine‑issue standard)
- Merrell Dow Pharm., Inc. v. Havner, 953 S.W.2d 706 (Tex.) (Havner standard for epidemiological proof and doubling‑of‑risk requirement)
- Merck & Co. v. Garza, 347 S.W.3d 256 (Tex.) (application of Havner reliability threshold)