Except with respect to projects and programs for which funds have been previously committed, no new grants or loans shall be made after January 1, 1975, under (1) title I of the Demonstration Cities and Metropolitan Development Act of 1966 [42 U.S.C. 3301 et seq.], (2) title I of the Housing Act of 1949 [42 U.S.C. 1450 et seq.] (3) section 702 or section 703 of the Housing and Urban Development Act of 1965 [42 U.S.C. 3102 or 3103], (4) title II of the Housing Amendments of 1955 [42 U.S.C. 1491 et seq.], or (5) title VII of the Housing Act of 1961 [42 U.S.C. 1500 et seq.].