The election and inauguration of Donald J. Trump as the president of the United States of America have provoked an unprecedented intensity of reflection in virtually all academic disciplines. The professions of architecture and planning, faced with the phenomenon of a self-proclaimed "builder-in-chief," have found themselves facing a series of fundamental questions, both old and new. How should we think, teach, and practice under a developer presidency? What sort of walls will we and won't we choose to build? What are our commitments of critical thought, and what obligations should we turn...