Except as provided in this subchapter, the principles of law and equity, including the law merchant and the law relating to principal and agent, estoppel, laches, fraud, misrepresentation, duress, coercion, mistake, insolvency, or other validating or invalidating cause shall apply to actions and proceedings under this subchapter.

(Added Pub. L. 101–647, title XXXVI, § 3611, Nov. 29, 1990, 104 Stat. 4964.)