I suppose you have already entered your comment in the FRA LD Committee docket pointing this out? I have.Cardinal has been tri-weekly since Reagan/Lewis/Stockman. It will always be that way, like the Sunset. If the Senate flips by so much as one vote, Manchin becomes less powerful.
I don't hear a thing about a NYP-PGH-CHI service, call it Bway Ltd or 3-Rivers. The double-ended train sets for NYP-PGH service means no thru cars onto the Captiol Ltd to do it cheaply while not adding any train miles. That was one of the few Performance Improvement Plans that if implemented would run in the Black.
I would like to encourage everyone to please go to:
Homepage
Federal Railroad Administration Amtrak Daily Long-Distance Service Study The Federal Railroad Administration (FRA) is conducting an Amtrak Daily Long-Distance Service Study to evaluate the restoration of daily long-distance intercity rail passenger service and the potential for new Amtrak...

And submit your comments. That is a more productive activity than venting here at AU or any of the various other railfan groups and web sites.