An architectural historian considers the way walls real and imagined have shaped belonging, exclusion and citizenship across time — starting with the walls erected by enslaved laborers at the University of Virginia.

Sayra is from Mexico. Alejandro from Bolivia. Their journeys are different but the limbo they’ve experienced growing up undocumented in America has shaped them in parallel ways. Also on this episode, American University law professor Amanda Frost reflects on how the hidden history of citizenship-stripping can inform naturalization policy in the present.