Is There a Relationship Between Trade and Invasive Species?

Is it possible to have a global society where there is not just trade, but the movement of people on a wide scale, and not have this kind of shit crossing? I don't know. As things get more fragile, how else do you keep some of these invasive species out, but keeping people out, which is i think, a bad move for a lot of reasons. Itsi r, i would like clubs of peopleik,. i would like to see m new place i live in, like the old place, like the european starling was introduced in new york. You know, one guy wanted to see all the birds of shakespeare inmas christ. Ohha