The U.S. national debt has passed the $13 trillion mark, according to USDebtClock.org, an independent website that tracks the real-time growth of U.S. revenues and spending.
On Tuesday, the national debt stood at $12,995,779,490,444.52, according to the Treasury Department's national debt-tracking website TreasuryDirect.gov.
The Treasury Department did not immediately return a request from ABC News for comment ... READ MORE www.abcnews.go.com