As of a few moments ago watching CSPAN-2, it appears the Senate opposition tactic is to pull provisions, such as the $15/hr minimum wage, out and into separate legislation that would require 60 votes. Under current rules, only certain legislation, which falls under
reconciliation, can pass with 51 votes.
Since restoring train frequency, as distinct from appropriating funds, could be considered away from the legislative intent, I must question if the train frequency will stand.
The Class I industry has lobbyists ready to point this out to Senators - all this assuming that they welcome the relief from having Amtrak trains interfere with Precision Railroading practices.
Finally, let it be noted with "Demlican" Sen. Manchin (?-WV), other non-rail "pet provisions" could find themselves heaved.