“As long as we believe that, it will be true”
You miss the point.
It’s not the leftists that have to be defeated on this issue, it’s the conservatives that would have to have a change of heart. They agree with Wickard, so they are not likely to go along with you.
A conservative that doesn't believe in holding to the original intent of the Constitution would be oxymoronic. If you believe that the Constitution is a "living document" that means whatever we want it to mean then there is nothing to conserve. It will all be brand new tomorrow.