The Week in Pictures - March 11, 2016 (21 images)

President Barack Obama (L) shakes hands with Canadian Prime Minister Justin Trudeau following a joint press conference in the Rose Garden at the White House, in Washington, D.C. on March 10, 2016. Photo by Kevin Dietsch/UPI

Mourners pay their respects as former first lady Nancy Reagan lies in repose at the Ronald Reagan Presidential Library and Museum, where she will be buried Friday, March 11, 2016. Photo by Jae C. Hong/Pool/UPI

First lady Michelle Obama sits on a stationary bike at the Girl Up booth during an International Women’s Day event celebrating the one-year anniversary of the 'Let Girls Learn' initiative, highlighting the importance of equal rights and education for women, at Union Market in Washington, D.C. on March 8, 2016. Photo by Kevin Dietsch/UPI

Donald Trump debates Sen. Ted Cruz on trade with Cuba at the CNN and The Washington Times debate at the University of Miami, in Miami, Fla., on March 10, 2016. Voters in Florida will go to the polls on March 15 for the state's primary. Photo by Gary I Rothstein/UPI