One-sided stories, by GOP decree

As I wrote earlier this morning, Roll Call's Lauren Whittington wrote a story about the GOP's negative ad campaign against Sen. Byrd.
What's particularly egregious about the Roll Call piece is that her Republican source demanded Whittington not talk to any other sources and she agreed, a gross violation of standard journalistic practices. Furthermore, Whittington failed to disclose that arrangement in the story, which ended up being a one-sided affair at the insistence of the Republicans. Whittington essentially wrote a GOP press release for them in a journalistic publication.
On April 5, 2005, the NY Times made the same mistake. They had to apologize for it.