Yeah that's what we had but they managed to "progressively" errode it over time because Tocqueville was right.

The American Republic will endure until the day Congress discovers that it can bribe the public with the public’s money

And he was right because Adam's was right

Our Constitution was made only for a moral and religious People. It is wholly inadequate to the government of any other.

Since we are not longer moral or religious in the major population centers, those who still are have no choice but to either live under secular tyranny or separate from them entirely