And will also have control of the entire legislature, which gives them the ability to do things like:

• take over the SCOTUS (by stacking it, which they have promised to do)
• create a permanent single-party system by adding 2 new states (they have promised to pursue statehood for DC and Puerto Rico) which would give the Democrats enough reliable electoral votes that they wouldn't face any significant challenge in an election for generations
• pass the AWB they are promising to pass, where they could very well define "assault weapons" to include all semiautomatics
• ensure ongoing protection for tech monopolies so they don't have to worry about legal repercussions for silencing all conservative thought and ideas

There's a lot of shit they can do with their newly stolen majority and the drive to destroy what's left of America and its liberties.