It largely doesn't depend on him, but the 174 fix itself has bipartisan support. But so far they've been unable to craft a whole tax bill that will pass the Senate, because of other disagreements, and now Sen. Crapo is holding the bill because he thinks they'll be able to get a bill they like better next year (though they're talking about making the 174 changes retroactive to 2021).

Interest rates will almost certainly get lower in the next term, regardless of who's in the White House.