Titans of finance and politics met for a very private lunch at the Four Seasons restaurant on Friday. Sen. John McCain, former AIG head Hank Greenberg, former Goldman Sachs chief John Whitehead and Henry Kissinger broke bread with money managers Evelyn de Rothschild and wife Lynn Forester de Rothschild, who wrote a much-talked-about newspaper op-ed piece last week on ending the “carried interest” tax rate, which allows institutional investors to reap huge profits. The group of 16 huddled inside a private dining room, but heads in the restaurant’s Grill Room turned when all later paraded through on their way out. Spies told us McCain greeted many in the dining room, including Blackstone Group founders Stephen Schwarzman and Pete Peterson (who were at separate tables). While some speculated the gathering was a major powwow over financial reform, a McCain aide told us, “Sen. McCain was in the city for meetings and enjoyed lunch with old friends and longtime supporters.”