Stupp Corporation v. United States
5 F.4th 1341
Fed. Cir.2021Background
- Commerce investigated imports of welded line pipe from South Korea (Oct 1, 2013–Sept 30, 2014) and applied its "differential pricing" analysis to respondents SeAH and Hyundai HYSCO.
- Commerce segmented U.S. sales by region, purchaser, and time period, applied Cohen’s d to test groups vs comparison groups, and then used a 33%/66% "ratio test" to pick average-to-average, average-to-transaction, or a hybrid method.
- Commerce applied the hybrid method to SeAH, producing a weighted-average dumping margin of 2.53% (above the 2% de minimis threshold); Commerce had rejected parts of SeAH’s case brief as untimely factual material.
- SeAH challenged (1) Commerce’s rejection of its case brief, (2) the standard of review and reasonableness of Commerce’s differential-pricing methodology (ratio cutoffs, meaningful-difference test), and (3) Commerce’s reliance on Cohen’s d (including the 0.8 cutoff and underlying assumptions).
- The Federal Circuit affirmed Commerce on the case-brief timeliness, the standard of review (reasonableness), the ratio test, and the meaningful-difference test, but vacated and remanded as to Commerce’s application of Cohen’s d because of concerns the data here may have been too small, non‑normal, and heteroscedastic for Cohen’s d assumptions to hold.
Issues
| Issue | Plaintiff's Argument | Defendant's Argument | Held |
|---|---|---|---|
| Rejection of SeAH’s case brief (procedural timeliness and content rules) | SeAH: materials were public or derived from record and thus timely; Commerce’s enforcement was inconsistent | Commerce: SeAH submitted new factual information untimely and failed to classify it under regulation subsections; Commerce may control record development | Affirmed — Commerce did not abuse discretion in rejecting untimely factual material not aimed at rebutting a verification report. |
| Standard of review for Commerce’s differential-pricing methodology | SeAH: substantial-evidence review required because Commerce’s approach is a policy-like rule and affects outcomes | Commerce: methodology is an interpretive rule implementing statute; reasonableness review applies | Held: reasonableness is the proper standard (methodology interprets 19 U.S.C. §1677f‑1(d)(1)(B)). |
| Ratio test and 33%/66% cutoffs | SeAH: cutoffs are arbitrary and Commerce must justify them with record-specific evidence | Commerce: cutoffs are reasonable, explained as heuristics to gauge pervasiveness; Commerce has discretion absent statutory prescription | Held: cutoffs and ratio-test approach are reasonable methods to identify patterns of significantly differing prices. |
| Use of Cohen’s d (0.8 cutoff and underlying assumptions) | SeAH: Cohen’s d cutoffs rely on assumptions (normality, similar variances, adequate sample sizes) not met here; use produced unreliable "passes" and materially affected margin | Commerce: effect-size literature supports Cohen’s d and 0.8 is a conservative cutoff; having the full universe (not a sample) obviates sampling concerns | Held: remanded — court raised substantial concerns that Cohen’s d may be unreliable here given small groups, non‑normality, and unequal variances and directed Commerce to explain or justify its use under these conditions. |
Key Cases Cited
- Apex Frozen Foods Priv. Ltd. v. United States, 862 F.3d 1337 (Fed. Cir. 2017) (upheld Commerce’s meaningful-difference framework for addressing targeted/masked dumping)
- Mid Continent Steel & Wire, Inc. v. United States, 940 F.3d 662 (Fed. Cir. 2019) (reasonableness review of Commerce’s differential-pricing components; remand on pooled SD issue)
- Micron Tech., Inc. v. United States, 117 F.3d 1386 (Fed. Cir. 1997) (agency discretion in developing and verifying investigation records; abuse-of-discretion review)
- JBF RAK LLC v. United States, 790 F.3d 1358 (Fed. Cir. 2015) (Commerce may fill statutory gaps with reasonable methodology for detecting targeted dumping)
- JTEKT Corp. v. United States, 642 F.3d 1378 (Fed. Cir. 2011) (Commerce has discretion to adopt reasonable methodologies to implement statutory directives)
- Kisor v. Wilkie, 139 S. Ct. 2400 (2019) (distinguishing interpretive from legislative rules)
- Lincoln v. Vigil, 508 U.S. 182 (1993) (defines agency policy statements and discretionary exercises of agency power)
- American Farm Lines v. Black Ball Freight Serv., 397 U.S. 532 (1970) (agency may relax procedural rules when justice requires)