The powerhouse staffer will boost Priorities USA as the presidential race moves closer to November. The super-PAC supports President Obama, who has publicly acknowledged the group.
Cahill served under former President Clinton as assistant to the president and as director of the Office of Public Liaison. She also worked under the late Sen. Edward Kennedy (D-Mass.) as chief of staff and for EMILY’S List, a pro-abortion-rights political action committee.
Super-PACs can raise unlimited funds but cannot make contributions to federal candidates or committees, nor are they allowed to coordinate with candidates.