As mentioned elsewhere, this is literally impossible. Directly cutting mandatory spending would require new laws which, in turn, would require a supermajority in the Senate due to the filibuster, meaning the DNC would also need to be all-in on it. On the note, keep this in mind the next time some party, which can't see past tomorrow, tries to eliminate the filibuster.

Checks and balances are very important and I'm very happy to see the GOP making 0 effort to end the filibuster in spite of it currently being rather liberally used by the DNC.