I'm definitely against smuggling. Sarracenia jonesii, or the mountain sweet pitcher plant, was nearly wiped out by poachers in North and South Carolina. The red pigment free mutation was wiped out from the wild because of poachers. This plant only occurs in 3 counties in 2 states, only in the US. It's now critically endangered, mostly because of poachers, and why I'm against smugling. Luckily, I have a legally collected division of the SC form that was taken from a well established plant with multiple rhizomes.
Because of the status of this plant it's illegal to sell across state lines. However, it is legal to give it away to someone for further propagation. Luckily, plants are much easier to breed/make more of than animals.
The only times I've collected wild plants was A) when a site was sprayed with herbicide and 60% of the plants died. That number has moved up to 80% since the onset of winter. This basically means I'm growing an extirpated population, along with the lucky few that I've given seedling to. And B) when we discovered new populations in counties that they've never been found in before to make herbarium specimens and to cultivate to see if there were any differences. This is for a conservation group and we have permits to do this. I don't recommend amateurs trying this, as it can lead to jail time if you collect the wrong thing.
We've been wanting to breed black banded sunfish, which are critically endangered in my state, but it's illegal to possess them, regardless of where they come from. We may be issued permits in a few years if some legal decisions are made.