On April 28, the Supreme Court will finally take up the constitutionality of same-sex marriage bans. Dahlia Lithwick previews the cases with Paul Smith, the lawyer involved in the 2003 gay rights case that helped set the stage for this historic event. Please let us know what you think of Amicus, our legal affairs podcast. Our email is amicus@slate.com. Join Slate Plus! Members get bonus segments, exclusive member-only podcasts, and more. Sign up for a free trial today at http://slate.me/1ENza1a

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