Collidge's article "Marriage is not Meant for Same-gender couples" was published in the Los Angeles Times on February 28, 2000.
Coolidge also edited with Wardle, Duncan and Mark Strasser the book Marriage and Same-Sex Unions: A Debate.
Coolidge was also a professor at the Columbus School of Law of The Catholic University of America.
Among many other legal cases which he commented on, Coolidge disagreed with the New Jersey court ruling in James Dale's case against the Boy Scouts of America for removing him for violating the requirement of being morally straight.
Among other points, Coolidge argued that the court was wrong in finding the exclusion of gay men to be a recent development on the part of the Boy Scouts.