Title XXIII, Ch. 322.142:
1) The department shall, upon receipt of the required fee, issue to each qualified applicant for an original driver's license a color photographic or digital imaged driver's license bearing a fullface photograph or digital image of the licensee. A space shall be provided upon which the licensee shall affix his or her usual signature, as required in s. 322.14, in the presence of an authorized agent of the department so as to ensure that such signature becomes a part of the license.
So, there is a provision in the statutes that addresses full facial exposure on photographs. Hmmm......