Subject to the limitations of RCW
28B.15.910, the governing boards of the state universities, the regional universities, and The Evergreen State College and the state board for community and technical colleges may waive all or a portion of the nonresident tuition fees differential for residents of the Canadian province of British Columbia, upon completion of and to the extent permitted by an agreement between the governing boards of the individual institutions of higher education or the state board for community and technical colleges and appropriate officials and agencies in the Canadian province of British Columbia providing for enrollment opportunities for residents of the state of Washington without payment of tuition or fees in excess of those charged to residents of British Columbia.