National Homelessness Task Force Act of 2007 - Establishes in the legislative branch a National Homelessness Task Force to: (1) analyze reports by federal, state, and local agencies and academic institutions relating to homelessness; (2) evaluate the effectiveness of federal programs addressing homelessness, particularly their interaction with state and local entities which also address homelessness; (3) analyze options and make recommendations to alleviate the causes and effects of such homelessness; and (4) conduct related research and develop methods to improve, federal, state, and local agency coordination.