"At issue is the role of David Keene, head of the American Conservative Union which organizes CPAC. In September, POLITICO reported that Keene asked FedEx for between $2 million and $3 million to get the group's support in a bitter legislative battle with rival UPS.
A source close to the Palin camp says that request led to a decision to stay away from the upcoming CPAC conference, calling it a forum that will place "special interests over core beliefs" and "pocketbook over policy."
"That's not what CPAC should be about and people are tiring," the source said. "Palin is taking a stance against this just as she did in Alaska."
When asked about the move, Palin spokeswoman Meg Stapleton said: "We support those who advance our core beliefs and lead by principle."