What a statutory interpretation opinion interprets may seem given. It is not: this article shows how judges select what text to interpret. That text may seem to carry with it one of a limited range of contexts. It does not: this article shows how judges draw on a variety of factors to situate the texts they interpret in unique, case-specific contexts. Selecting and situating form the infrastructure of interpretation. Their creativity and choice provide the basis on which assertions of determinate meaning are made. That process reveals how contestation and indeterminacy permeate legal interpretation even as judicial opinions seek to fix and finalize meaning. How does an opinion explain why it selects the text it does? How does it justify sit...