Md. Code, Economic Development § 5–416

A finding by the Authority, including a finding as to the public purpose of an action taken under this subtitle, and the appropriateness of that action to serve the public purpose, is conclusive in a proceeding involving the validity or enforceability of:

(1) an agreement the Authority enters into under this subtitle;

(2) a bond; or

(3) any security relating to item (1) or (2) of this section.