emergency regulation

(A) that is effective temporarily before the expiration of the otherwise specified periods of time for public notice and comment under section 5334(c); and

(B) prescribed by the Secretary as the result of a finding that a delay in the effective date of the regulation—

(i) would injure seriously an important public interest;

(ii) would frustrate substantially legislative policy and intent; or

(iii) would damage seriously a person or class without serving an important public interest.