Although claims about Obama's citizenship were evaluated in 2008 by the McCain Campaign and ultimately rejected, they became a significant issue among sections of the political right. By mid-2009, the citizenship issue was one of the hottest and most lucrative sources of fundraising for organizations on the right that raise funds through direct mail and telemarketing. Online petition sites such as that of Alan Keyes, who has been collecting signatures on the birth certificate issue, are a major source for generating mailing lists of movement conservatives. The web site WorldNetDaily published more than 200 articles on the subject by July 2009 and has sold billboards, bumper stickers and postcards asking "Where's the birth certificate?" and similar slogans in an effort which has "already raised tens of thousands of dollars."Moderate conservatives have found themselves "bombarded with birther stuff". Protesters at the Tea Party protests in 2009 carried signs about the birth certificate issue, some of which were recommended by protest organizers. In an incident that attracted widespread media coverage, moderate Republican Representative Michael Castle was booed and heckled during a July 2009 town hall meeting in Georgetown, Delaware, when he told a woman protesting about Obama's birth certificate: "if you’re referring to the president there, he is a citizen of the United States." NBC Nightly News reported that other members of Congress often hear the issue too; an anonymous congressman told the program that he was reluctant to advertise his own town hall meetings for fear of this issue drowning out everything else.A number of Republican legislators have, proposed legislation and constitutional amendments at the state and federal levels to address issues raised by the birth certificate campaigners. Some Republicans are said to "want the issue to go away", seeing it as a distraction. Democratic commentators have criticized the reluctance of some Republicans to distance themselves from the proponents of the conspiracy theories, suggesting that "Republican officials are reluctant to denounce the birthers for fear of alienating an energetic part of their party's base". NBC News' "First Read" team commented: "the real story in all of this is that Republican Party has a HUGE problem with its base right now." Republican National Committee Chairman, Michael Steele released a statement through his spokesperson saying, "Chairman Steele believes that this is an unnecessary distraction and believes that the president is a U.S. citizen."Conservative Joel Pollak, writing for The American Thinker, has stated that the reason the "Birther theory" has caught on particularly among conservatives, is the weakness of the Republican opposition, stating:In the absence of strong Republican leadership, some find the Birther theory a compelling, if desperate, solution. Yet it is ultimately a self-destructive one — not just because it is almost certainly false, but because it contradicts the essential spirit of the conservative movement.Political analyst Marc Ambinder of The Atlantic and CBS News, suggests that the birther phenomenon goes to the heart of the dilemma now facing the Republican Party, positing thatRepublican presidential candidates need to figure out how to diffuse angry birthers who are bound to show up and demand their attention. If they give credence to the birthers, they're not only advancing ignorance but also betraying the narrowness of their base. If they dismiss this growing movement, they might drive birthers to find more extreme candidates, which will fragment a Republican political coalition.Political analyst Andrew Sullivan, writing in The Sunday Times, statedThe demographics tell the basic story: a black man is president and a large majority of white southerners cannot accept that, even in 2009. They grasp conspiracy theories to wish Obama — and the America he represents — away. Since white southerners comprise an increasing proportion of the 22% of Americans who still describe themselves as Republican, the GOP can neither dismiss the crankery nor move past it. The fringe defines what’s left of the Republican centre.