First of all, that passage specifically limits the definition of that debt, despite the massive bogusity (it's a technical term) of Perry v. United States (1935).
But second of all, what it actually refers to is the legitimacy of the debt to the Federal Reserve. In other words, the Constitution authorizes the government to be the source of our money, and Congress then passed this responsibility on to a private corporation, the Fed, to print the money and loan it back at it's printed value - a scam of such unbelievable proportions, most people... don't believe it. But it's true, and such a wildly hyperbolic violation of the Constitution, that they decided to say, in the 14th Amendment that... "hey, you know that giant ripoff of our currency we made to the Fed through totally artificial, wildly inflated debt? Well, you hereby cannot question whether that debt is valid."
It's like declaring that people have to be taxed when the sky is red, and then passing a law that the blue sky is red, and then passing an Amendment that says "the validity of the definition of the sky as red shall not be challenged."
No, on the other hand, it's not "like" that.
It IS that.
He's very right with his image of the Kabuki mask to represent the current attempt to repeat the Gingrich-Dole defeat of 1995.
The problem for the pouty highchair king occasionally at 1600 Pennsylvania Avenue is that most don't believe him.
Rush makes it clear the mechanism is in place to convert treasury bonds to keep the checks going out on time.
If they don't, it will be due to the pique of the pouty poseur.