I think it's good to have the official context from the state of NY as well, which argues that Kalshi meets the state's standards for gambling; has serially refused to get the required licenses, and serves customers aged 18-20 in a market where gambling is restricted by law to people over 21.

https://ag.ny.gov/press-release/2026/governor-hochul-and-att...

My impression was that NY wanted a TRO to stop Kalshi operating in New York, not nationally. A TRO seems like a rather extreme measure in that it assumes the plaintiffs win the lawsuit as a premise, but I guess that's partly a function of how long New York has been trying and failing to obtain compliance with its gaming laws, and intended to provoke a preliminary hearing into the merits of the case (vs letting the litigation drag on for years without anyhting changing).