"We the People of the United States" declare the principles of the Constitution in the preface called this
The preamble to the Constitution of Japan is called 
Preface.. [DOC] [TLE] SOTS: Declaration of Independence; U.S. Constitution - CT.gov [PAR] Declaration of Independence; U.S. Constitution Abstract: PREFACE TO THE ... 
and to institute new government, laying its foundation on such principles, and ...