• It lobbied the Department of Health and Human Services on Medicare coverage of power scooters and wheelchairs from The Scooter Store. The Scooter Store agreed Friday to pay a $4 million fine and surrender $43 million in Medicare claims over allegations by the Justice Department that it had defrauded the government.

• It lobbied the Food and Drug Administration on behalf of UST Public Affairs over regulation of tobacco products.

• It tackled copyright protection and legislation on the purchase of cable TV lineups for News Corp. and DirecTV.

• It lobbied on behalf of Cornell Companies last year for U.S. Bureau of Prisons contracts. In 2004, the prison operator was named in indictments of two associates of then-Rep. Tom DeLay, R-Texas. Cornell wasn't charged but was listed among companies making political donations that prosecutors said DeLay's associates illegally laundered for use in Texas campaigns.

• It lobbied Congress on behalf of Concentrax Inc. of Houston, which was trying to raise government interest in a vehicle-tracking system called "Track Down." The lobbying work in 2005 came a few years after Concentrax settled an SEC lawsuit accusing it of falsely claiming to have won contracts for the vehicle-tracking system.

Giuliani, then New York City's mayor, became a national hero after the 2001 attacks on the World Trade Center. He left the mayor's office in 2002 with a $3 million book deal, and last year took in $11.4 million from speeches alone.

Giuliani's Bracewell partnership is one of several enterprises. Others, 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.

Giuliani's campaign has said he is considering how and when to separate himself from his business interests. Earlier this year, Giuliani Capital was sold to Australia-based Macquarie Group for an undisclosed sum.

Besides lobbying, Bracewell represents clients in legal matters, among them AOL Time Warner, Apple Computer, Bank of America, General Electric and Southwest Airlines.

In March, the firm filed papers in a Texas case on behalf of Saudi Arabia's oil ministry — taking sides with another energy giant, Citgo, which is controlled by Venezuelan President Hugo Chavez, a Bush administration critic. After the 2001 attacks, then-Mayor Giuliani famously rejected a $10 million check from a Saudi prince to help terrorism victims.