Faced with a deluge of opposition that included pressure from lawmakers and internal dissent, one of America's leading breast cancer advocacy groups on Friday reversed itself on a decision that would have cut off funding to some Planned Parenthood projects. "We want to apologize to the American public for recent decisions that cast doubt upon our commitment to our mission of saving women's lives," the Susan G. Komen for the Cure Foundation said in a statement. "We will continue to fund existing grants, including those of Planned Parenthood, and preserve their eligibility to apply for future grants, while…