US v. Yu

Circuit 1Dec 11, 2025

Split Score

SplitScore: 69/100

Case Summary

Disposition

Affirmed

The First Circuit affirmed Haoyang Yu’s conviction for possessing a stolen trade secret relating to a microchip design, rejecting challenges to the sufficiency of the evidence and claims of unconstitutional selective enforcement and prosecution based on his Chinese ethnicity. The court also adopted the Seventh Circuit’s view that a defendant need prove selective-enforcement claims only by a preponderance of the evidence, explicitly declining to apply the higher “clear evidence” standard used by several other circuits.

View Full Opinion Document (PDF)

Circuit Split Identified

Legal Issue

What evidentiary burden applies to an equal-protection selective-enforcement claim in federal criminal cases.

Circuit Positions

Circuit 3Circuit 4Circuit 9Circuit 10

Selective-enforcement claims must satisfy Armstrong’s heightened “clear evidence” standard.

Circuit 1(this circuit)Circuit 7

Selective-enforcement claims are governed by the ordinary preponderance-of-the-evidence standard applicable to equal-protection claims.

Conflict Summary

Several circuits require a defendant to produce “clear evidence” (a heightened Armstrong standard) to establish discriminatory effect and purpose for selective-enforcement claims, while the Seventh Circuit—and now the First Circuit—hold that the ordinary civil preponderance-of-the-evidence standard governs. The Ninth and Tenth Circuits have cited the clear-evidence test approvingly, further entrenching the divide.

Parties & Counsel

Parties

Appellant:Haoyang Yu
Appellee:United States

Legal Counsel

Appellant:William W. Fick, Daniel N. Marx, Amy Barsky, Fick & Marx LLP
Appellee:Karen Lisa Eisenstadt, Assistant United States Attorney; Leah B. Foley, United States Attorney