In Europe, there are "lots" of ads etc for tourism, they market to the people of Europe who would travel to other countries within Europe.
Quite novel marketing approach.......determine who your "target" audience is and "target" your ads to those who come to visit from those countries.
Tourism is a huge deal for people who cannot rely on "native" US citizens to only "stay" in the US, and not go to any other countries for a vacation.
Toronto is concerned about a "downsize" of US visitors, because guess what, a lot of people who live in Toronto do not stay at Hotels, go out to dinner everynight, go to "tourist" attractions, etc.
I go to California, well I have to stay at a Hotel($), buy meals(support the service industry), go to different attractions, buy "tourist" gifts, and spend my money in California.
Trust me when I say that when SARS hit Toronto, tourism was down 50%, conventions were cancelled, very few people came.
Hotel rooms sat empty, lays off, business closed, stores closed, many people ended up unemployed, restaurants closed and or laid off employees, it "hurt" the entire "tourist" industry.
Is this what you want for the service industry in the USA.......you know the little B&B in Yellowstone, the Grand Canyon, other tourist attractions.
You seem to feel that people who come over and spend their "money" in your country are a threat to your security, that is your opinion.
But ask any service industry employee, and they "need and want" tourist to come to their restaurant, stay in their hotel, pick their tourist attraction.
Lest they lose their job and the ability to support their family........tourist are the backbone and the bread and butter......
That is why the "trend" of people avoiding the USA and lack of tourist would be alarming, because if it is a trend then it is likely to continue.
I see ads in my province for Virgina Beach, New York, Boston, Penn. Florida, California, Washington State, Maryland because they are not that far from Canada and "are marketing to Canadians".