Remember: Clinton's Impeachment was about the Lies, not the Sex
See Josh Marshall here.
Second, what the president said today almost certainly violates his oath of office in which he swears to "preserve, protect, and defend the Constitution of the United States."
That would be the Constitution which reads (Am.XIV, 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."
(original links preserved)