2026 Membership Book FINAL

USCA4 Appeal: 25-1892

Doc: 16

Filed: 10/15/2025

Pg: 16 of 97

INTRODUCTION In the seminal 1974 amendments to the Commodity Exchange Act

(“CEA”), Congress created the Commodity Futures Trading Commission

(“CFTC”) and gave it “exclusive jurisdiction” over nationwide derivatives

exchanges. 7 U.S.C. § 2(a)(1)(A). In the decision below, the district court

authorized Maryland state regulators to vitiate that exclusive jurisdiction.

These regulators claim sweeping power not only to regulate, but to prohibit,

certain trading on a CFTC-regulated exchange because they are dissatisfied

with the CFTC’s oversight . The district court below refused to preliminarily

enjoin these efforts. This Court should reverse.

KalshiEX LLC (“Kalshi”) is a CFTC -licensed and regulated exchange,

known as a designated contract market (“DCM”). Federal law accordingly

preempts state regulation of trading on Kalshi, as confirmed by every

conceivable marker of legislative intent. The CEA’s text grants the CFTC

“exclusive jurisdiction” over trading on DCMs. 7 U.S.C. § 2(a)(1)(A).

Congress in 1974 deleted the provision that had previously preserved

concurrent state jurisdiction, noting its intent to “preempt the field.” H.R.

Rep. No. 93-1383, at 35 (1974). And Congress repeatedly reinforced —

indeed, expanded — the CEA’s exclusive-jurisdiction provision after courts

uniformly and easily concluded that it preempts state regulation.

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