He explained how to use debt to make a profit when the economy sours.

The House will vote this week on a Republican proposal allowing the Treasury to borrow funds to pay bondholders and Social Security recipients if there's a prolonged standoff over raising the debt ceiling. But this approach is extremely dangerous.

Washington owes indemnifications "that rise to numerous millions of dollars," Castro wrote.

Our leaders like to call their strategy borrowing, but it is really tantamount to stealing -- from our children, worse yet. Why? Because we have no plans to pay the debt.