The Corporation may also require an assurance by the applicant that any national service program carried out by the applicant using assistance provided under section
12571 of this title and any national service program supported by a grant made by the applicant using such assistance will select a portion of the participants for the program from among prospective participants recruited by the Corporation or State Commissions under section
12592
(d) of this title. The Corporation may specify a minimum percentage of participants to be selected from the national leadership pool established under section
12592
(e) of this title and may vary the percentage for different types of national service programs.