George Washington University Hospital, where Attorney General Michael Mukasey was taken after collapsing during a speech, is seen in the early morning hours Friday, Nov. 21, 2008 in Washington. (AP Photo/Lauren Victoria Burke)

Two people walk near the emergency entrance of George Washington University Hospital in the early morning hours of Friday, November 21, 2008 in Washington.Attorney General Michael Mukasey was taken to George Washington University Hospital after collapsing during a speech Thursday night. (AP Photo/Lauren Victoria Burke)

Former Secretary of State Warren Christopher arrives for a discussion with former Secretaries of State at the taping of CNN's "The Next President: A World of Challenges", Monday, Sept. 15, 2008, at George Washington University in Washington. (AP Photo/Charles Dharapak)

This undated image provided by National Georgraphic and George Washington Foundation, shows eighteenth-century wig curlers of various sizes were found in one of the cellars of the Washington house by the archaeologists digging at Ferry Farm. Wealthier 18th-century colonists used imported objects to curl the hair and wigs of both men and women, and even to style the manes of their horses. (AP Photo/National Geographic/George Washington Foundation)

This undated image provided by National Geographic and George Washington Foundation, shows the lid of an Astbury ceramic teapot, probably part of a high-style tea set owned by Mary Ball Washington, George's mother. Various pieces of the set were found during excavations of a stone-lined cellar that once lay beneath George Washington's boyhood home. (AP Photo/National Geographic/George Washington Foundation)

In this Sept. 27, 2004 file photo, Sen. Edward Kennedy, D-Mass. delivers his speech about the effect of the war in Iraq on America's security at George Washington University in Washington. A cancerous brain tumor caused the seizure Sen. Edward M. Kennedy suffered over the weekend, doctors said Tuesday in a grim diagnosis for one of American politics' most enduring figures. (AP Photo/Manuel Balce Ceneta)

A member of the audience wearing traditional Native American clothing stands in front of a portrait of President George Washington during a ceremony where President Bush presented the Medal of Honor posthumously to family members of Army Master Sgt. Woodrow Wilson Keeble, Monday, March 3, 2008, in the East Room at the White House. Keeble is the first full-blooded Sioux Indian to receive the Medal of Honor. (AP Photo/Ron Edmonds)

Sen. Tim Johnson, D-S.D., right, rides next to Sen. Robert Menendez, D-N.J., left, as they head to the Capitol for a vote, Thursday, Dec. 6, 2007, on Capitol Hill in Washington. (The last thing Sen. Tim Johnson remembers from Dec. 13, 2006, is arriving at George Washington University Hospital in an ambulance. After that, his memory begins to fade. The next month is a total blank. AP Photos/Susan Walsh)

Sen. Tim Johnson, D-S.D. is seen in his office on Capitol Hill in Washington, Thursday, Dec. 6, 2007. The last thing Sen. Tim Johnson remembers from Dec. 13, 2006, is arriving at George Washington University Hospital in an ambulance. After that, his memory begins to fade. The next month is a total blank. (AP Photos/Susan Walsh)

Sen. Tim Johnson, D-S.D., right, talks with his press secretary, Julianne Fisher, as they ride the Senate subway on Capitol Hill in Washington, Thursday, Dec. 6, 2007, on his way over for a vote. The last thing Sen. Tim Johnson remembers from Dec. 13, 2006, is arriving at George Washington University Hospital in an ambulance. After that, his memory begins to fade. The next month is a total blank. (AP Photos/Susan Walsh)