WASHINGTON - MAY 11:  Sen. Mark Warner (D-VA) speaks during a seminar May 11, 2009 in Washington, DC. The seminar was hosted by the Department of Transportation and the Department of Commerce on America's transportation infrastructure and its readiness for global trade. Getty Images logo Getty Images 6 months ago

WASHINGTON - MAY 11: Sen. Mark Warner (D-VA) speaks during a seminar May 11, 2009 in Washington, DC. The seminar was hosted by the Department of Transportation and the Department of Commerce on America's transportation infrastructure and its readiness for global trade.