"What can you do about this? As usual, there's nothing you can do."
You can do something. We all can. Find out what your local representatives voted on this issue. If they voted yes, you vote NO when you go to the polls!
If you thing the R. and D. are all the same (a reasonable assumption) then vote for the 'other' person running. If we all do this, one day we will get a new party (or parties) in this great country of ours.