According to the social contracts: What is the designed source for government power within the united States of America?​

We know that honorable or just government powers come from the governed people, the citizen.

We know this is true for these united States of America, because of the second paragraph of The Declaration, which states:

• "We hold these truths to be self-evident, that all men are created equal, that they are endowed by their Creator with certain unalienable Rights, that among these are Life, Liberty and the pursuit of Happiness.--That to secure these rights, Governments are instituted among Men, deriving their just powers from the consent of the governed, --That whenever any Form of Government becomes destructive of these ends, it is the Right of the People to alter or to abolish it, and to institute new Government, [...]; and accordingly all experience hath shewn, that mankind are more disposed to suffer, while evils are sufferable, than to right themselves by abolishing the forms to which they are accustomed. But when a long train of abuses and usurpations, pursuing invariably the same Object evinces a design to reduce them under absolute Despotism, it is their right, it is their duty, to throw off such Government, and to provide new Guards for their future security.--Such has been the patient sufferance of these [States]; and such is now the necessity which constrains [us] to alter their former Systems of Government. The history of the present [Present Republican form of government] is a history of repeated injuries and usurpations, all having in direct object the establishment of an absolute Tyranny over these States. To prove this, let Facts be submitted to a candid world."

The list of grievances is proof that we must alter our system, or at least replace our present form of government with another, with a better form.