I predict sometime early in the New Year, Trump and Musk will come out attacking the Senate Parliamentarian. They will call him a Democrat or a member of the deep state.

This will happen because Trump wants to get a bunch of stuff passed that won't make Democrats happy and he won't be able to get 60 votes for it in the Senate, so he will have to do it through Reconciliation. Reconciliation only requires 50 votes, however it has to meet certain budgetary requirements. For one, it has to be budget related (i.e. immigration policies would not meet this requirement). For two, it has to not increase the deficit after 10 years.

The Senate Parliamentarian is not going to allow a lot of what Trump wants to be included in Reconciliation. So Musk and Trump will attack him. Sic conservative media all on him hoping some nutcases send him death threats so he will cave or quit.