45 U.S.C. § 797i

1. (a)The liability of the United States under an agreement entered into or benefit schedule prescribed under section 797 1 See References in Text note below. of this title or for payment of a termination allowance under section 797a of this title shall be limited to amounts appropriated under section 797l 1 of this title.
2. (b)
   1. (1)The Corporation, Amtrak Commuter, and commuter authorities shall incur no liability under an agreement entered into or benefit schedule prescribed under section 797 1 of this title or for the payment of a termination allowance under section 797a of this title.
   2. (2)Notwithstanding any other provision of law, until April 1, 1984, the Corporation shall have no liability for employee protection in the event of a sale of any asset to a purchaser, and such purchaser shall assume the liability for the application of employee protection conditions imposed by the Commission for all employees adversely affected by such sale.