Read the entire article. People like Napolitano believe that myths about Canada are true, when the truth is that Canada's border regulations are more rigorous than those of the US.

No 9/11 terrorists came across the Canadian border; they all arrived at American entry points with American documentation.

No successful terrorist in the US has come from Canada. In the few cases where people intent on causing terror in the US came from Canada (Like the failed "Millennium Bomber"), those people were stopped with help from intel from the Canadian RCMP.

This paranoia about Canada being a launching point for terrorists in America needs to stop. It's untrue, and it's damaging a relationship that was already deeply damaged by George Bush.

Americans don't want to get on the bad side of Canadians; after all, the vast majority of the US's Energy Imports come from Canada; especially petroleum.

I'd like to see Canada enforce some of those tough immigration laws we're supposed to have. There is a drug war being waged in the Vancouver area of British Columbia. Seldom a day goes by without a drive-by shooting. Women too are being targeted. The last woman shot and killed was an illegal immigrant. Been here for years, her children (born here) in private schools financed with criminally earned money. Why wasn't she deported. She is only one of thousands.

Americans don't like Canadians (politically) because they do not run on paranoia.
Janet is not a politician if she uses throw out lines like she has here. Dismissive and arrogant. Ask why Canada has as many guns as America and a fraction of the deaths caused by them.
We've just had a run of drive bys as some bikie gangs / criminals (drugs) who have taken over bikie gangs, sort out their pecking order. Been a crack down too.

9/11 terrorists came across the Canadian border; they all arrived at American entry points

This was obviously Canada's fault eh?
More ignorance is right.

how effective can american border security be when the person in charge of it is completely mistaken about how the 9/11 perpetrators entered the country?

Well said, gzuckier.