Janet Napolitano has ignored a letter written by New Jersey Congressman Leonard Lance calling for the Department of Homeland Security chief to attend a congressional briefing and provide an explanation as to why the DHS has committed to purchasing more than 1.6 billion rounds of ammunition over the last year.

Lance, who first promised to investigate the matter during a Tea Party event on March 15, sent a letter five days later noting how there was “growing public concern surrounding the Department’s procurement of ammunition.”

“He is not asking for Napolitano to testify but to give us a congressional briefing because Congress wasn’t aware of it. It deserves an answer,” Lance spokesman Todd Mitchell told the Daily Record.

Over a week after the letter was sent, Lance’s office has still not received a response, similar to how 15 other members of Congress were stonewalled by the DHS when they demanded to know if the huge bullet purchases were an attempt by the federal agency to restrict ammunition supplies.