Answer:
First, what is meant by social contract? By definition, in Webster's dictionary, a social contract is, "an implicit agreement among the members of a society to cooperate for social benefits, for example by sacrificing some individual freedom for protection." Thus, we as citizens of the United States, are part of a social contract in that we elect representatives to govern our nation, our states, and us. That being said, our government exists to serve us, and as it says in the Constitution allow us to enjoy" life, liberty and the pursuit of happiness." So, our agreement as stated in the Constitution is that we, as citizens DO NOT have to give up any of our rights in order for our government to protect us. If we look at the former U.S.S.R. where citizens were forced to give up a large majority of their individual freedoms, they were also taught what to think and what to say by their government.
Social contracts, such as our Constitution, clearly defines what our rights and liberties are. Our representatives make laws, our court system enforces the laws. With our system of checks and balances, no one part of our government is more powerful than the other, thus we as Americans do enjoy "certain inalienable rights," that many other governments do not allow their citizens.