The opponents of the Constitution warned that the federal government would usurp power from the states and engage in tyranny. The most farseeing of its opponents predicted that the power grab would be done via "construction," i.e., faulty interpretations of the Constitution. The Federalists promised that the feds would not abuse their power, and if they did, the states would reign the feds in.
Thomas Jefferson tells us we should interpret the Constitution based on the promises of the Federalists.
And of course, if we are to restore our liberty, it is the people of the states via their state and county representatives that should be doing the interpreting.