March 25 - March 31, 2012 (44 images)

Republican Presidential Candidate Rick Santorum greets supporters after speaking at the U.S. Supreme Court, as the court begins hearing arguments on the constitutionality of President Obama's health care bill, in Washington, D.C. on March 26, 2012. UPI/Kevin Dietsch

Protesters gather in front of the U.S. Supreme Court as the court begins hearing arguments on the constitutionality of President Obama's health care bill in Washington, D.C. on March 26, 2012. UPI/Kevin Dietsch

Milwaukee Bucks Drew Gooden watches New York Knicks Baron Davis loose the basketball out of bounds in the first quarter at Madison Square Garden in New York City on March 26, 2012. UPI/John Angelillo

First Lady Michelle Obama and Yoriko Fujisaki, the wife of the Japanese Ambassador to the United States Ichiro Fujisaki, watch as children help plant a cherry blossom tree during an event celebrating the centennial anniversary of the 1912 gifts of cherry blossom trees to the United States from Japan, in Washington, D.C. on March 27, 2012. UPI/Kevin Dietsch