Last I heard (6:52 PM EST October 10 2020) Donald Trump wants to sign a huge new stimulus bill. I don’t try to read his mind, but I think he is sincere. It is the only way he can win re-election. On the other hand, Mtich McConnell does not want the Senate to pass a huge stimulus bill. I assume that he assumes that Trump will lose and has already switched to the worse it is the better it is. What is a poor President to do ?
1) Mitch McConnell is not President of the Senate. The President of the Senate is named Michael Pence. Michael Pence can actually preside. Then if a Senator (say Charles Schumer) introduces a Mnuchin/Pelosi compromise bill, it can be debated (Pence need show no more respect for regular order than McConnell ever has). Then there will be a filibuster. VP Pence can declare the debate over and call a vote. This would be a lie about Senate rules. McConnell would object and the Senate would vote on the objection. The Democrats, independents and 3 Republicans would make a tie so Pence’s decision would stand. This is how filibusters are nuked. McConnell doesn’t have to be involved. He can be outvoted if there are three Republican Senators who do not want to break with Trump, go against public opinion, and lose their seats. Then there would be a vote. The Democrats, independents, 3 Republican Senators and Pence could send the bill to Donald Trump to sign.
I think it all works fine. Pence can say no to Trump (it is a tradition that Vice Presidents are servants of Presidents not a provision of the Constitution (as Jefferson and Adams might explain). It is possible that no Republican Senators would see any gain in breaking with Trump. It is almost certain that Trump won’t do this.
But I think it is his only chance of re-election.