I'm trying to find out if former NYC politician Diane
McGrath-McKechnie is still involved in anything or holds any positions
anywhere.

She was the Republican candidate for Mayor in 1985, a member of the NY
State Crime Victims Compensation Board in the '80s, and the
commissioner of the NYC Taxi and Limousine Commission in the '90s
under Mayor Giuliani.

she is retired and living in florida.  she is now a defendant in a
class action lawsuit about her lawless conduct as head of the TLC.
Padberg et al. v. McGrath-McKechnie, et al
Ind. No. 00 Civ. 3355 (RJD)
 
See: http://dackman.homestead.com/PadbergDocs.htm