
Canada's Prime Minister Stephen Harper (R) walks with U.S. President Barack Obama after Obama's arrival on Parliament Hill in Ottawa, Ontario, Canada on 19 February 2009. The trip is Obama's first outside the U.S. since his inauguration last month. EPA/MATTHEW CAVANAUGH

Canada's Prime Minister Stephen Harper (R) walks with U.S. President Barack Obama after Obama's arrival on Parliament Hill in Ottawa, Ontario, Canada on 19 February 2009. The trip is Obama's first outside the U.S. since his inauguration last month. EPA/MATTHEW CAVANAUGH

Canada's Prime Minister Stephen Harper (2-L) walks with U.S. President Barack Obama (L) after Obama's arrival on Parliament Hill in Ottawa, Ontario, Canada on 19 February 2009. Harper introduced Obama to the Speakers of the House of Commons and Senate as well as other dignitaries. The trip is Obama's first outside the U.S. since his inauguration last month. EPA/MATTHEW CAVANAUGH

Canada's Prime Minister Stephen Harper (top) watches as U.S. President Barack Obama signs a guest book after Obama's arrival on Parliament Hill in Ottawa, Ontario, Canada on 19 February 2009. The trip is Obama's first outside the U.S. since his inauguration last month. EPA/MATTHEW CAVANAUGH

Canada's Prime Minister Stephen Harper (4L) watches as U.S. President Barack Obama signs a guest book after Obama's arrival on Parliament Hill in Ottawa, Ontario, Canada on 19 February 2009. Also pictured are (L to R) Clerk of the Senate Paul Belisle, Clerk of the House of Commons Audrey O'Brien, Speaker of the House of Commons Peter Milliken, Speaker of the Senate Noel Kinsella, Sergeant at Arms Kevin Vickers, and Usher of the Black Rod Kevin MacLeod. The trip is Obama's first outside the U.S. since his inauguration last month. EPA/MATTHEW CAVANAUGH

Canada's Prime Minister Stephen Harper (L) directs U.S. President Barack Obama to sign a guest book after Obama's arrival on Parliament Hill in Ottawa, Ontario, Canada on 19 February 2009. The trip is Obama's first outside the U.S. since his inauguration last month. EPA/MATTHEW CAVANAUGH

Canada's Prime Minister Stephen Harper (4L) watches as U.S. President Barack Obama signs a guest book after Obama's arrival on Parliament Hill in Ottawa, Ontario, Canada on 19 February 2009. Also pictured are (L to R) Clerk of the Senate Paul Belisle, Clerk of the House of Commons Audrey O'Brien, Speaker of the House of Commons Peter Milliken, Speaker of the Senate Noel Kinsella, Sergeant at Arms Kevin Vickers, and Usher of the Black Rod Kevin MacLeod. The trip is Obama's first outside the U.S. since his inauguration last month. EPA/MATTHEW CAVANAUGH