The laws merely reflect the principles. The Declaration of Independence outlines the principles. The Constitution codifies it into law, as an example -- a perspective much argued for by Abraham Lincoln. (This is why it's ok to amend the constitution -- because much to the chagrin of a certain political philosophy, it is not the constitution that is the unchanging doctrine, but rather, the declaration. Think creed versus canon law, as another example). From this perspective you can probably deduce the examples I would give.