Which document, and why vague? It's not in the constitution. I checked ngram viewer, and it showed this document from 1937 that first used it in that context:

Which document, and why vague? It's not in the constitution. I checked ngram viewer, and it showed this document from 1937 that first used it in that context: https://www.google.com/books/edition/Jews_Jobs_and_Discrimination/0HzUAAAAMAAJ https://www.google.com/books/edition/Jews_Jobs_and_Discrimin...