Section 502.503 - Evidentiary burden1. Civil. In a civil action or administrative proceeding under this chapter, a person claiming an exemption, exception, preemption, or exclusion has the burden to prove the applicability of the claim.2.Criminal. In a criminal proceeding under this chapter, a person claiming an exemption, exception, preemption, or exclusion has the burden of going forward with evidence of the claim.C77, 79, 81, § 502.503 98 Acts, ch 1106, §18, 19, 24; 99 Acts, ch 166, §6; 2004 Acts, ch 1161, §41, 68