This explains why most of the theoretical works authored by Progressives begin with a critique of natural rights principles, and it makes understandable Wilson's admonition—in an address ostensibly honoring Thomas Jefferson—that "if you want to understand the real Declaration of Independence, do not repeat the preface." In other words, do not repeat that part of the Declaration that enshrines natural rights as the focal point of just government not only for the founding era, but for all time.
To overcome checks and restraints placed on national government by the constitution, progressives knew they had tp critique the natural rights theory of the declaration.