@Ionus,
A proposition in one of the bills included "end of life counseling" which was then turned into a "death panel". It was likened to a panel of people who would decide if old people get to live or die (by denying certain procedures or medications).
In actuality, physician provide end-of-life counseling NOW as part of their oath. N-stage patients are asked if they have considered a DNR in the event of a full code. In many cases, we may be able to keep their body alive by various mechanical means, but the person will be dead by all reasonable definitions. Patients are asked if they want these measures taken.
There is a lot more to it, but that is the basics of it... it was something taken completely out of context and with no actual explanation and morphed into a slogan/idea used to kill the bill itself.