Mo. Rev. Stat. § 339.1160
Any employee or independent contractor of the appraisal management company who performs an appraisal review shall be an individual who holds a license as a state licensed real estate appraiser or certification as a state certified real estate appraiser under this chapter. Letters of engagement shall include instructions to the appraiser to decline the appraisal review assignment in the event the appraiser is not geographically competent or the assignment falls outside the appraiser's scope of practice restrictions.
(L. 2010 H.B. 1692, et al.)