The Secretary may cooperate with State and local agencies charged with the administration of State and local fair housing laws and, with the consent of such agencies, utilize the services of such agencies and their employees and, notwithstanding any other provision of law, may reimburse such agencies and their employees for services rendered to assist him in carrying out this subchapter. In furtherance of such cooperative efforts, the Secretary may enter into written agreements with such State or local agencies. All agreements and terminations thereof shall be published in the Federal Register.