"Almost every question our staff has asked federal agency witnesses regarding conversations with or involvement of the White House has been met with a response that they could not answer on direction of the White House," Lieberman said.
Brown has said that he notified the White House of his concerns about the storm on the weekend before it struck. Lieberman said that in a meeting with congressional investigators yesterday, Brown was advised by agency lawyers not to answer specific questions about whether he'd spoken to Bush and Vice President Dick Cheney in the days leading up to the storm.
Congressional investigators aren't the only ones facing difficulties in receiving information from the federal government. The National Science Foundation study researchers have encountered delays in receiving documents from the Army Corps of Engineers relevant to their review of the levee breaches.