The U.S. President that caused the most debt is President Barack Obama. The U.S. debt grew by 53 percent during the first six years of his presidential term. Obama has added $6.167 trillion to the debt.
The spending budgets submitted by Obama included the economic stimulus package. It added $787 billion by cutting taxes, extending unemployment benefits, and funding job-creating public works projects. Obama increased defense spending to approximately $800 billion per year. The Patient Protection and Affordable Care Act was sponsored by Obama. Part of its purpose was to reduce the U.S. debt by $143 billion during a 10-year time period.