CBS issued this statement today, in an effort to clarify its policy on not accepting "advocacy ads" during the Super Bowl:

CBS Statement on Advocacy Advertising

NEW YORK, Jan. 28 /PRNewswire/ -- Given the misleading and inaccurate statements offered to the media and the public in recent days, it is understandable why there is confusion over the CBS Television Network's longstanding policy against advocacy advertising.

The policy is decades old. It is designed to prevent those with means to produce and purchase network advertising from having undue influence on "controversial issues of public importance."

From the Network's perspective,we believe our viewers are better served by the balance and perspective such issues can be afforded within our news programming.

And, also, they have believed that viewers are better served by commercials with models wrestling in water fountains.