As noted Thursday, a Brooklyn state senator with clout over the issue of city school reorganization simultaneously, as a private attorney, represents a former assistant principal suing Chancellor Joel Klein for wrongful termination. The problem of two-hatted state lawmaker/attorneys is hardly confined to New York, as Massachusetts' Lowell Sun confirms in a report on a veteran state lawmaker whose private practice includes both representing local governmental units with extensive interests in statehouse affairs, and representing employees negotiating with such governments.