ABC News' Teddy Davis Reports: Sen. Barack Obama, D-Ill., has issued a statement calling comments made by one of his rivals for the Democratic presidential nomination â€œhistorically inaccurate.â€? "I didn't take Senator Biden's comments personally," Obama said in reference to comments Biden made to the New York Observer, "but obviously they were historically inaccurate. African-American presidential candidates like Jesse Jackson, Shirley Chisholm, Carol Moseley Braun and Al Sharpton gave a voice to many important issues through their campaigns, and no one would call them inarticulate." Obama's written statement took a tougher line towards Biden than he did earlier in the day. "You'd have to ask Senator Clinton, uh, Senator Biden what he was thinking," Obama said on camera earlier today. "I donâ€™t spend too much time worrying about what folks are talking about during a campaign season." In an interview with the New York Observer which appeared earlier today, Biden was quoted as saying of Obama, "I mean, you got the first mainstream African-American who is articulate and bright and clean and a nice-looking guy. I mean, that's a storybook, man."