The purposes of this part are—

((1)) to promote community-wide commitment to the goal of ending homelessness;

((2)) to provide funding for efforts by nonprofit providers and State and local governments to quickly rehouse homeless individuals and families while minimizing the trauma and dislocation caused to individuals, families, and communities by homelessness;

((3)) to promote access to, and effective utilization of, mainstream programs described in and programs funded with State or local resources; and

((4)) to optimize self-sufficiency among individuals and families experiencing homelessness.