I'm not so sure. I don't think it's quite that "because of TSA, I will go to Canada instead," but rather repeated hints from the news, popular culture, and personal interactions that people come to internalize the idea that the U.S. is an unfriendly police state, so they don't want to go there.

Like in the advertising industry, which tries to reinforce a brand image through repeated, sometimes subtle, impressions, the same thing can happen in reverse to create a negative image of a product. I wouldn't be surprised if that is happening to the U.S.