45 C.F.R. § 1620.5 – Annual review.

(a) Priorities shall be set periodically and shall be reviewed by the governing body of the recipient annually or more frequently if the recipient has accepted a significant number of emergency cases outside of its priorities.
(b) The following factors should be among those considered in determining whether the recipient's priorities should be changed:
1. (1) The extent to which the objectives of the recipient's priorities have been accomplished;
2. (2) Changes in the resources of the recipient;
3. (3) Changes in the size, distribution, or needs of the eligible client population; and
4. (4) The volume of non-priority emergency cases or matters in a particular legal area since priorities were last reviewed.