And then it says: The term ‘‘troubled assets’’ means ... any other financial instrument that the Secretary, after consultation with the Chair man of the Board of Governors of the Federal Reserve System, determines the purchase of which is necessary to promote financial market stability...
So actually it could be any asset at all. Including, let’s say: corporate debt!
18 (1) STANDARD.—Actions by the Secretary pursuant to the authority of this Act shall be subject to chapter 7 of title 5, United States Code, including that such actions shall be held unlawful and set aside if found to be arbitrary, capricious, an abuse of discretion, or not in accordance with law.
The purposes of this Act are-
...
(D) provides public accountability for the exercise of such authority.