Related Clues:

• 'An Inconvenient Truth' subject
• Dr. Ruth's subject
• Book by Madonna
• Birth certificate datum
• James Brown hit '___ Machine'
• 1990s vice president
• Talk show topic
• Kind of kitten
• Clinton's number two
• Survey datum
• Census category
• Application line
• Driver's license info
• Horn in on?
• It sells, they say