By Toni Clarke WASHINGTON (Reuters) – The Senate voted overwhelmingly on Wednesday to confirm Dr. Robert Califf as head of the Food and Drug Administration, an agency that regulates everything from food and drugs to tobacco, cosmetics and dietary supplements. Califf, 64, a well-regarded cardiologist and researcher, takes the helm at the FDA when lawmakers are pressuring it to speed the approval process for drugs and medical devices and to finalize a proposed rule giving it authority to regulate e-cigarettes. Another priority for Califf is improving surveillance systems to monitor for safety.