Abstract
I deploy the sense-reference distinction and its kin from the philosophy of language to answer the question what in constitutional interpretation should, and should not, be able to change after founders adopt a constitutional provision. I suggest that a constitutional expression's reference, but not its sense, can change. Interpreters should thus give founders' assessments of reference only Skidmore-level deference. From this position, I criticize the theories of constitutional interpretation offered by Raoul Berger, Jed Rubenfeld, and Richard Fallon, and apply the theory to whether the Fourteenth Amendment forbids racial segregation in public schools.