Original sentence: He is founder and executive director of Freedom to Marry, a group favoring Same-sex marriage in the United States.Wolfson, who many consider to be the father and leader of the marriage movement, authored the book Why Marriage Matters; America, Equality, and Gay People's Right to Marry, which Time Out New York magazine called, "Perhaps the most important gay-marriage primer ever written..." He was listed as one of Time Magazine's 100 Most Influential People in the World
Edited sentence: He is founder and executive director of Freedom to Marry, the campaign to win marriage equality nationwide in the United States.Wolfson, who many consider to be the father and leader of the marriage movement, authored the book Why Marriage Matters; America, Equality, and Gay People's Right to Marry, which Time Out New York magazine called, "Perhaps the most important gay-marriage primer ever written..."  He was listed as one of Time Magazine's 100 Most Influential People in the World