The national debt, which is also called government debt or public debt, is the money which is owed by any level of government. and is in actuality taxpayer debt. Generally speaking, governments borrow money by issuing government bonds, bills, and securities. This is where you will find sites which espouse any stance on the issue of national debt.
Regular Websites
The Concord Coalition is a non-profit organization dedicated to eliminating federal budget deficits and ensuring social security is secure for all generations. - Concord Coalition
http://www.concordcoalition.org/
The FedSpending.org web site provides a fully searchable database of approximately $16.8 trillion in federal government spending; with complete annual data. - FedSpending.org
http://www.fedspending.org/
Find out if the national debt is increasing, if the Treasury Department is borrowing, or if there really is a deficit at this web site. - US Federal Budget
http://www.federalbudget.com/
Web site features a bar chart of government spending in the United States; with archives of previous federal budgets over the years. - US Government Spending
http://www.usgovernmentspending.com/
The USAspending.gov web site provides information on government spending, specifically how and where federal contracting dollars and grants are awarded. - USAspending.gov
http://www.usaspending.gov/