It may be widely accepted among today's ignorami, but it certainly wasn't at the time of the founding.
"George Mason IV (December 11, 1725 - October 7, 1792) a delegate from Virginia to the U.S. Constitutional Convention, who is called the "Father of the Bill of Rights," had said during the debate on ratification in Virginia that the Constitution was not founded on English common law through a single example on treaties, bluntly stated that English common law was not the common law of the United States."
I did not say that the common law of England is the Common law of the United States though, did I? I said the constitution is “written in the language of the English common law” and it most certainly is. that does not mean that English common law is the common law of the United States; however, the English Common Law most definitely was the law of this land from 1607 until until 1788 so there is no denying its influence over our law.