After skipping the popular Conservative Political Action Conference for the past three years, Sarah Palin has once again turned down the invitation of CPAC officials to address the conference this year. CPAC organizers invited Palin to deliver the closing-night keynote speech on Saturday Feb. 12, immediately following the announcement of the results of CPAC’s annual presidential straw poll, but after several days of negotiations, she declined. “We’re disappointed that she wasn’t able to make it this year,” American Conservative Union Chairman David Keene said through a spokesman on Thursday. He noted that Palin "expressed interest in wanting to come this...