Notwithstanding any other provision of this subchapter, grants under this subchapter may be used to eliminate drug-related crime in and around housing owned by public housing agencies that is not public housing assisted under the United States Housing Act of 1937 [
42 U.S.C.
1437 et seq.] and is not otherwise federally assisted, for the activities described in paragraphs (1) through (7) of subsection (a) of this section, but only if—