As for the "Declaration", it is the expression of what we aspire to be (that all men are created equal) and that which we dislike (The King of Great Britain has dissolved our representative houses repeatedly,...). The Constitution is a mature, just, perpetual, "King". The Declaration is a passionate rebel. America would not be America without both. The Declaration reminds the King that if he does not rule wisely, there will be "probable cause" for rebellion.
And the Queen? I have always considered Old Glory to be our Queen. Forever beautiful, forever inspiring bravery. She compels us to be worthy of her. When we are truly worthy, she is given to our parent or spouse as "a symbol of the gratitude of a grateful nation". She represents the majesty of the "King", our Constitution and the passion of rebellion in our "Prince", the Declaration.
The Declaration, the Constitution and Old Glory are the "Trinity" of America. Without all three, the "stool" has only two legs and is unstable.
Is writing poetry your day job?