Adams was a minister of the Gospel in the Congregational Church, not an intellectual, nor a scholar of renown.
Mostly he was recognized as a social leader in the colonies.
What does the US Supreme Court say about it?
“There is, however, one clear exception to the statement that there is no national common law. The interpretation of the Constitution of the United States is necessarily influenced by the fact that its provisions are framed in the language of the English common law, and are to be read in the light of its history. The code of constitutional and statutory construction which therefore is gradually formed by the judgments of this Court, in the application of the Constitution and the laws and treaties made in pursuance thereof, has for its basis so much of the common law as may be implied in the subject, and constitutes a common law resting on national authority.”
http://supreme.justia.com/cases/federal/us/124/465/case.html
” The language of the Constitution and of many acts of Congress could not be understood without reference to the common law.”
http://supreme.justia.com/cases/federal/us/91/270/case.html
All our founding fathers who were lawyers were students of English law, and they studied it in English.
The flights of fancy and wholesale invention that birthers must engage in in quite humorous.
May as well think the Sun goes around the Earth as to deny that the law the founders studies was English law, and that the language they studied it in was English. ;)