Barack Obama

Clinton

2003-09-19 Cheney

Lynne Cheney Mackinaw Island, MI September 19th, 2003

2001-12-03 Ashcroft

US Attorney General John Ashcroft and Solicitor General Lawrence MaCaulay of Canada expand integrated border enforcement program. Dec. 3, 2001

2004-08-13 Kerry

Sen. John Kerry Portland, Oregon August 13, 2004 60,000+ people