pulling the plug

When is it ok to pull the plug?
Texas law, in a piece of legislation signed by our President, who today flew back to DC to sign Delay's legislation to send the Shiavo's case to a Tennessee federal court, has an opinion.

If the question is: who can decide whether to pull the plug on a patient in a vegitative state, I have a great deal of patience and willingness to listen and learn. I am afraid the popular rhetoric has nothing to do with that debate.