The Council may, by ordinance, amend the Fire and Police Pension Plan – Tier 4 to incorporate provisions of federal laws and regulations required to maintain the tax-qualified status of the Fire and Pension Plan – Tier 4. The Council also may enact ordinances to modify or repeal such provisions. Ordinances adopted pursuant to this section shall be adopted in accordance with Charter Section 1618. It is the intent of this section to facilitate compliance with the provisions of federal laws affecting the Fire and Police Pension Plan – Tier 4.