Section 485A-503 - Evidentiary burden(a) In a civil action or administrative proceeding under this chapter, a person claiming an exemption, exception, preemption, or exclusion shall have the burden to prove the applicability of the claim.(b) In a criminal proceeding under this chapter, a person claiming an exemption, exception, preemption, or exclusion shall have the burden of going forward with evidence of the claim. L 2006, c 229 , pt of §1 .