A former chief of staff for Rep. Steve King is joining Graham's exploratory committee.
The super-PAC allows a future campaign to solicit huge contributions from major donors.
She is hiring Jesse Ferguson and others to improve her relationship with the press.
Rachel Kania is the second former Cruz staffer to join the Kentucky Republican.
Former Texas governor focused on foreign policy over economics in a campaign-style speech.
O'Malley said Clinton is "perfectly capable" of defending her service.
Two committees are now in the midst of investigating her decision to use a private server.
Mario Trujillo 03/11/15 11:04 AM EDT
The former governor said personal and public email in Maryland is subject to disclosure.
Potential candidates are either signing the letter or supporting it.
Both Republicans and Democrats addressed the International Association of Fire Fighters.