From the Code of Ethics (Society of Prof. Journalists)
"Distinguish between advocacy and news reporting. Analysis and commentary should be labeled and not misrepresent fact or context. "
For more- see this site:http://www.spj.org/ethics_code.asp
Is Jennings a member?
Exactly. A reporter who shows his bias or otherwise is not objective is not a reporter; he's a commentator, and should describe himself as such. I'm a reporter, and I would dare anyone who doesn't know me to correctly describe my political views by reading my news stories. Jennings, et al., couldn't say the same.