"Organic Laws of the States, Territories, and Colonies Now or Heretofore Forming the United States of America"
All that means is that Mass. was a colony that became part of the USA. The Mayflower Compact is still not even close to being a founding document of the USA. That would be the Declaration of Independence.
The Mayflower Compact is 180 degrees off from what the real founding documents of the USA stand for (The Declaration and the Constitution).