No, we are a Republic that derives its governance from the US Constitution.<quoted text>We are a Republic and that republic derives it's governance through Democracy.
At no point in our nations history can you point to and say socialism was the controlling institution. Never happened, never will, as we are a market-based society through which you and I and everyone can achieve our potential.
As for your metaphor...About following a jackass or an elephant,seems to me the logical choice would be the jackass,for no other reason than there would be a whole lot less excrement to walk through!
The US Constitution has jurisdiction over all branches of the government and all branches must adhere to its law.
Even the USSC can be overruled by the Constitution.