 He is Vice Chair of the bipartisan Commission on the Prevention of WMD proliferation and terrorism, which has concluded that, unless action is taken, a biological attack within the United States is increasingly likely and will become a probability by 2013.Together with former Senator Bob Graham, Chairman of the Commission, he has criticized the federal government's readiness to deal with major public health crisis'.On January 4, 2010, the two Senators published an op-ed in the "Washington Post", arguing that an unsatisfactory response to the 2009 flu pandemic shows the need for better medical emergency plans.