Our country works federally. ...
No, Federal legalization in the U.S. probably isn’t going to happen any time soon, ‘in my personal opinion.’
The timing is difficult to predict but the money grab by the states and eventually the federal government is going to be too lucrative to ignore. In Mass, the taxes related are: adult use marijuana regular sales tax 6.25%, and excise tax 10.75%, plus optional local sales tax up to 3% and the businesses involved all have to pay extra license fees and such.
Plus the involved business lobbies, sensing the dollar potential, see no downside to push for legalization. Strangely, even the insurance industry will go for it . Pretty certain they will make sure that they can increase premium rates to cover any presumed higher losses plus make an additional profit. In the U.S., money speaks very loudly.