** FILE ** Former New York City Mayor Rudolph Giuliani, center, and Mexico City police commissioner Marcelo Ebrard, left, walk through the streets of the capital in this Jan. 14, 2003, file photo after Mexican business leaders agreed to pay $4.3 million to have Giuliani and his consulting firm help clean up Mexico City police and crack down on violence and kidnappings. Apart from his Houston-based law and lobbying firm Bracewell & Giuliani, the 2008 presidential candidate has several enterprises: past and present, include Giuliani Partners, a consulting firm; Giuliani Capital Advisors, an investment banking firm; Giuliani & Kerik, an arm of Giuliani Partners focused on security; and a security firm, Giuliani Security & Safety LLC. At far right is former New York Police Commissioner Bernard Kerik. (AP Photo/Guillermo Arias, File)