So what's with all the pens?
Why did President Obama use 22 pens to sign the healthcare legislation Tuesday?
He was continuing a long-standing White House tradition for approving important legislation.
The pens are "a way of giving a very meaningful memento to the people who played a significant role in passing the legislation," said Mark Peterson, a professor of public policy and political science at UCLA.
Obama kept a pen for himself after signing the bill, and 19 pens were given out as mementos. Two will go to his presidential archives.
Among those gathered around Obama as he signed were Senate Majority Leader Harry Reid (D-Nevada), House Speaker Nancy Pelosi (D-San Francisco), Vice President Joe Biden, Health and Human Services Secretary Kathleen Sebelius, and Reps. Henry A. Waxman (D-Beverly Hills) and John D. Dingell (D-Mich.). All received pens.