04/16/2014 08:40 am ET Updated Apr 16, 2014

How Obama Got To 'I Do' On Same-Sex Marriage

YURI GRIPAS via Getty Images

By presidential fund-raising standards, the dinner at the St. Regis hotel in Washington in April 2011 was an intimate one. President Obama made the rounds, moving among the dozens of people in attendance, including Chad Griffin, a 37-year-old political operative known for his ability to raise money in Hollywood and for his work on trying to legalize same-sex marriage.

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