Mayor Brandon Scott filed suit against Kalshi and Polymarket in Baltimore, adding consumer protection claims to the legal framework already surrounding prediction markets. The suit alleges illegal sports wagering and violations of Maryland consumer protection law. It is the newest front in a pattern of state and municipal challenges that has accelerated through 2026.
The legal question here is narrower than it appears. Kalshi holds CFTC approval to operate event contracts. Federal preemption under the Commodity Exchange Act is its primary defense everywhere — in Baltimore as in Washington state. The CFTC's mandate covers futures and event contracts as financial instruments. Maryland's consumer protection statute covers deceptive trade practices in commerce with Maryland residents. These are not the same thing, and a court could find both apply to the same transaction without contradiction.
That is where Baltimore's theory gets interesting. A consumer protection claim does not require the court to rule on whether Kalshi's contracts are illegal gambling. It requires only that the city show the platform made material representations to Maryland consumers that were misleading or that it engaged in unfair trade practices under state law. CFTC approval does not immunize a federally regulated entity from state consumer protection enforcement. The FTC and state attorneys general run parallel actions against federally chartered banks routinely. The preemption argument Kalshi deployed in Washington state was aimed at a direct prohibition on its contracts — a different animal than a deceptive practices claim.
I've watched this pattern before: a regulator approves an instrument, a competitor jurisdiction challenges the underlying conduct rather than the instrument's legal status, and the approval turns out to cover less than anyone assumed. The gap between "federally permitted to exist" and "exempt from state consumer law" is real and has caught sophisticated operators before.
The piece of this I think the market is underweighting is enforcement durability. Baltimore is not seeking to shut Kalshi down nationally. A consumer protection judgment in Maryland could require disclosures, restitution to Maryland users, or operational changes specific to that jurisdiction — none of which the CFTC approval addresses. Multiple cities filing similar suits creates a compliance patchwork that imposes costs regardless of whether any single case succeeds on the merits.
