With an official credential hanging from his neck, a young man stepped into the White House briefing room Monday as perhaps <A HREF="http://www.cnn.com/2005/ALLPOLITICS/03/07/w.h.blogger.ap/index.html">the first blogger to cover the daily press briefings.</A> Garrett M. Graff, 23, writes Fishbowl D.C., a Web log about the news media in Washington. He decided to see if he could get a daily pass for a briefing after a recent controversy raised questions about White House access and who is a legitimate reporter.