Here are a couple of articles on the Dallas Dart GID protection vote. According to an attendee of the meeting, they amended it to remove the language about "to the extent consistent with Federal and State law" immediately before voting to pass it.
http://www.dallasvoice.com/instant-tea/2010/06/15/is-dart-trying-to-water-down-proposed-protections-for-transgender-employees/ (http://www.dallasvoice.com/instant-tea/2010/06/15/is-dart-trying-to-water-down-proposed-protections-for-transgender-employees/)
http://www.dallasvoice.com/instant-tea/2010/06/15/dart-advances-trans-protections-after-discussing-them-behind-closed-doors/ (http://www.dallasvoice.com/instant-tea/2010/06/15/dart-advances-trans-protections-after-discussing-them-behind-closed-doors/)