“With deep regret, I am resigning from my role as an advisor the Obama campaign effective today," Power said in a statement issued by the campaign. "Last Monday, I made inexcusable remarks that are at marked variance from my oft-stated admiration for Senator Clinton and from the spirit, tenor, and purpose of the Obama campaign. And I extend my deepest apologies to Senator Clinton, Senator Obama, and the remarkable team I have worked with over these long 14 months."
The Obama campaign said that the decision was Power’s, and stressed that “she was an adviser, not a paid staffer.”
"She made the decision to resign and we accepted," said communications director Robert Gibbs.
Earlier in the day, the Clinton campaign had called for Obama to end Power's association with his campaign.