A look at past PM visits to the U.S.

It used to be a standard occurrence for Canadian prime ministers to visit the United States several times a year. The trend has gone the other way in recent decades, with fewer U.S. visits and more international summitry. The Canadian Press has prepared an interactive graphic looking at past visits - and how U.S. media reported on them.

Relations between U.S. and Canadian leaders have warmed and cooled over the years

Former prime minister Jean Chretien and former U.S. president Bill Clinton were known to have warm relations. Here they share a laugh at the start round of golf at the Army Navy Golf course in Washington, D.C. in December, 2000. (Frank Gunn/Canadian Press)