Larry Sinclair of Duluth, Minn., has been charged twice with forgery, served 16 years in prison for fraud, is a Crimestoppers Most Wanted fugitive in Colorado, yet he’s speaking at the National Press Club (NPC) Wednesday to tell anyone who will listen that he has dirt on Sen. Barack Obama. Politico reports on Sinclair’s extensive rap sheet.

Sinclair’s credibility is in question, and he has yet to provide any documentation of the charges he’s leveling against Obama — that he and Obama had oral sex and did illegal drugs in Sinclair’s limo in 1998. In February of this year, Sinclair failed a polygraph test when asked questions about his story. Whitehouse.com, which administered the polygraph testing will hold a press conference at the National Press Club immediately after Sinclair’s event.

It appears that just about the only reason anyone is paying attention is that the event is being held at the National Press Club. The NPC insists he is only renting space in its building and that they do not turn down paying customers. But critics charge that the Press Club, by featuring Sinclair’s event prominently on its Web site, gives credibility to a criminal who has levied accusations against a public figure without proof. An online campaign has been under way to convince the Press Club to cancel the Sinclair event, which is being paid for by Veritas Federal Media. (The organization’s lineage is unclear, but blogger Taylor Marsh traces Veritas Media to one Joseph Giganti, who was the spokesman for the 2000 presidential campaign of Republican Alan Keyes — the same Alan Keyes trounced by Barack Obama en route to the U.S. Senate.) Sinclair is being represented by Montgomery Blair Sibley, an attorney whose license to practice law has been suspended. Sibley recently represented the late Deborah Jeane Palfrey, also known as the "D.C. Madam."

Sinclair filed suit against Obama, Obama’s media advisor, David Axelrod, and the Democratic National Committee for infringing on his right to free speech in Minnesota district court in February. That suit was quickly dismissed. Judge James M. Rosenbaum dismissed Sinclair’s case in early March, calling it a "plainly frivolous case sua sponte [of one's own accord] without requiring the victimized defendants to expend legal fees in responding."