You can see the ad in question. It does not really seem that bad to me, not even taking into account other ads on this plan. NBC has said they may run it following some 'revisions'.
Video embedded below.
"The refusal by ABC and NBC to run a national ad critical of President Obama's health care reform plan is raising questions from the group behind the spot -- particularly in light of ABC's health care special aired in prime time last June and hosted at the White House.
The 33-second ad by the League of American Voters, which features a neurosurgeon who warns that a government-run health care system will lead to the rationing of procedures and medicine, began airing two weeks ago on local affiliates of ABC, NBC, FOX and CBS. On a national level, however, ABC and NBC have refused to run the spot in its present form.
Adams said the advertisement is running on local network affiliates in states like Louisiana, Arkansas, Maine and Pennsylvania. But although CBS has approved the ad for national distribution and talks are ongoing with FOX, NBC has questioned some of the ad's facts while ABC has labeled it "partisan.""