I respectfully disagree. The Feds wouldn't touch that. All other states with legalization have regulators that are heavily involved with overseeing the operations of and collecting taxes from marijuana sales.

With how broad the Controlled Substances Act and Federal Money Laundering Statues are, you could technically charge every state with a legal regulated market right now. All state marijuana tax revenues are technically laundered.

The Fed already gave this OK under Obama, through the introduction of the Cole Memo (by the DOJ), which was a major policy shift indicating USDOJ would not enforce those laws against MRBs operating in compliance with state regulations and a set of "Priorities" (e.g. no sales to minors). While Trump's DOJ rescinded that (it was non-bindimg anyway), the DOJ as a department stated they would continue their non-enforcement approach.

I hate politics, but the fact is that GOP "politician" support for marijuana has been weak (but I know lots of conservative stoners), there are plenty of GOP in the NH Legislature, and you can't run an end around via ballot measure like we did here in MA.