12 USC 3345 - Certification and licensing requirements

(a) In general 
For purposes of this chapter, the term State certified real estate appraiser means any individual who has satisfied the requirements for State certification in a State or territory whose criteria for certification as a real estate appraiser currently meets the minimum criteria for certification issued by the Appraiser Qualification Board of the Appraisal Foundation.
(b) Restriction 
No individual shall be a State certified real estate appraiser under this section unless such individual has achieved a passing grade upon a suitable examination administered by a State or territory that is consistent with and equivalent to the Uniform State Certification Examination issued or endorsed by the Appraiser Qualification Board of the Appraisal Foundation.
(c) “State licensed appraiser” defined 
As used in this section, the term State licensed appraiser means an individual who has satisfied the requirements for State licensing in a State or territory.
(d) Additional qualification criteria 
Nothing in this chapter shall be construed to prevent any Federal agency or instrumentality under this chapter from establishing such additional qualification criteria as may be necessary or appropriate to carry out the statutory responsibilities of such department, agency, or instrumentality.
(e) Authority of Appraisal Subcommittee 
The Appraisal Subcommittee shall not set qualifications or experience requirements for the States in licensing real estate appraisers, including a de minimus[1] standard. Recommendations of the Subcommittee shall be nonbinding on the States.
[1] So in original. Probably should be “de minimis”.