Sarah Palin’s plan to deliver the keynote address – for a fee – at next month’s first-ever National Tea Party Convention is getting renewed attention in light of her rejection Thursday of an invitation to speak at the annual Conservative Political Action Conference. The decision to blow off CPAC – traditionally seen as the year’s must-attend event for the conservative establishment – in favor of a little-known convention is prompting some soul-searching among CPAC supporters, and is being interpreted as a calculated play by the former Alaska governor to cast herself as the potential 2012 GOP presidential candidate of the...