As President Trump fuels tension with Mexico with his plan to construct a wall across the shared border, a cluttered used bookstore on Capitol Hill has taken diplomacy into its own hands.

Capitol Hill Books has signed a Memorandum of Understanding creating a sister store relationship with Libería A Través del Espejo (Through the Looking Glass) in Mexico City. The agreement is mostly symbolic, store employees said, but is part of a broader effort to create friendships with Mexico residents in the era of Trump. Dan Cullen, media relations manager for the American Booksellers Association, said he knows of no other agreements like this between bookstores across international borders. 

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