This act shall constitute an independent authorization for a housing authority to undertake the development or administration of projects to provide safe and sanitary dwellings for persons engaged in national defense activities as provided in this act and for a housing authority to cooperate with or act as agent for the Federal Government in the development or administration of similar projects by the Federal Government. In acting as agent of the Federal Government under this act, a housing authority shall not be subject to any limitations, restrictions or requirements of other laws of this Commonwealth or any subdivision thereof (except those relating to land acquisition) prescribing the procedure or action to be taken in the development or administration of any public works, including slum clearance and housing projects for persons of low income or undertakings or projects of municipal or public corporations or political subdivisions or agencies of the Commonwealth. A housing authority may do any and all things necessary or desirable to cooperate with or act as agent for the Federal Government or to secure financial aid in the expeditious development or in the administration of projects to provide safe and sanitary dwellings for persons engaged in national defense activities and to effectuate the purposes of this act.