The Treasury has been selling more short-term debt at its regular auctions.
It sold assets and reduced debt, bringing its interest expenses down 30 percent.
The bond market is typically quiet before the Treasury sells debt.
But he said the company might sell subordinated debt from time to time.
Elsewhere, corporate borrowers are trying to sell debt before rates head higher.
Germany sells five-year debt at auction below 1pc for the first time.
It does not matter if the firm's capital is raised by issuing stock or selling debt.
Europe is looking barren for American companies that are seeking to sell debt or equity.
Many companies are rushing to sell debt to take advantage of the lowest long-term financing costs in years.
The country did manage to sell longer-dated debt, but at extremely high costs.