Amtrak owns the tracks in the north east, and hasn't done anything.
Even where they don't own tracks, doing a deep dive into the areas where there are problems can find solutions. There are many options to force a private owner to fix problems, and congress can fund part of the cost for a passing track if Amtrak calls it a priority. Or Amtrak and sue the private railroad for not giving them legal priority if that is the real problem. I'm sure there are lots of other options that someone in the railroads would know.
Even where they don't own tracks, doing a deep dive into the areas where there are problems can find solutions. There are many options to force a private owner to fix problems, and congress can fund part of the cost for a passing track if Amtrak calls it a priority. Or Amtrak and sue the private railroad for not giving them legal priority if that is the real problem. I'm sure there are lots of other options that someone in the railroads would know.