Dre's lawyer, Howard King, fired off a letter to Greene, saying "Mr. Young [Dre] has not, and will never, grant you permission to broadcast or disseminate any of his music."

As we reported, Greene posted a video of her walking to the House floor Monday, using Dre's song, "Still D.R.E." as the music bed.

King fired off a demand letter to Twitter, asking the company to block her post. For its part, Twitter not only blocked the post ... it also locked her Twitter account.

But King wasn't done. Dre's lawyer went after her in a blistering way, saying "you would have a passing familiarity with the laws of our country. It's possible, though, that laws governing intellectual property are a little too arcane and insufficiently populist for you to really have spent much time on."

Dre and King were not done ... "We're writing because we think an actual lawmaker should be making laws not breaking laws, especially those embodied in the constitution by the founding fathers."

And then the ultimatum ... King demanded that Green cease and desist from using any of Dre's music, and he set a time deadline ... "please provide me with written confirmation that you have complied with these demands before January 11, 2023 by 5:00 pm EST."

Before the letter was sent, Greene told TMZ, "While I appreciate the creative chord progression, I would never play your words of violence against women and police officers, and your glorification of the thug life and drugs."

We will follow up on this ... promise!