The Fed's interest is in keeping the growth-rate of the economy stable. They learned that decades ago. That strategy happens to be aligned with anyone who wants to get re-elected, and against anyone who wants to get elected, so they appear most often to be supporting the sitting government. But while they generally have the same goal, if their desired methods differ the Fed does not simply do what the pols want.
The rates will depend on the economy, which will drive politics. They will not be driven by politics; if that ever starts to happen we're in a world of total s#it.