Lieberman Subpoenas Pentagon Over Fort Hood Senators accuse administration of stonewalling By Rob Quinn, Newser Staff Posted Apr 20, 2010 1:18 AM CDT 10 comments Comments Senate Homeland Security and Governmental Affairs Committee Chairman Joe Lieberman, accompanied by the committee's ranking Republican Sen. Susan Collins, speaks on Capitol Hill last week. (AP Photo/Cliff Owen) (Newser) – Sens. Joe Lieberman and Susan Collins yesterday made good on their threat to subpoena the Pentagon and Justice Department for details relating to the Fort Hood shootings, setting the stage for the Obama administration's first legal battle with Congress. The Homeland Security committee chair and his Republican colleague accuse the administration of stonewalling the committee's probe into the shootings by Army Major Nidal Malik Hasan that killed 13 people, the Washington Post reports. The senators say they're seeking information about what the government knew about Hasan before the shootings and why warning signs were ignored. Defense Secretary Robert Gates says the military has no interest in hiding anything, but its priority is to avoid releasing information that could jeopardize Hasan's prosecution.