Question about Amendment XIV, Bush's Comments about SS Trust

Doesn't Amendment XIV say

Section 4. The validity of the public debt of the United States, authorized by law, including debts incurred for payment of pensions and bounties for services in suppressing insurrection or rebellion, shall not be questioned. But neither the United States nor any state shall assume or pay any debt or obligation incurred in aid of insurrection or rebellion against the United States, or any claim for the loss or emancipation of any slave; but all such debts, obligations and claims shall be held illegal and void.

A legal question: Is there any punishment by law for those who do question it? Especially a sitting President?

From a CNN article, April 5, 2005:

"A lot of people in America think there is a trust -- that we take your money in payroll taxes and then we hold it for you and then when you retire, we give it back to you," Bush said in a speech at the University of West Virginia at Parkersburg.
"But that's not the way it works," Bush said. "There is no trust `fund' -- just IOUs that I saw firsthand," Bush said.
Earlier, Susan Chapman of the Office of Public Debt Accounting had shown Bush an ivory four-drawer filing cabinet with numeric locks. "This is it," she said.
"This is what exists," Bush said, illustrating his point that the promise of future Social Security benefits are simply stashed in a file."