The Department of Homeland Security (DHS) has responded to a letter dated November 13, 2012 from Senator Tom Coburn (R-Okla.) regarding the agency's ammunition purchases. Sen. Coburn published the response on the U.S. Senate Committee on Homeland Security and Governmental Affairs website yesterday, April 1, 2013. The response, dated February 4, 2013, says that DHS buys ammunition in bulk to "significantly lower costs."