Species are not invasive, our concept of habitat is flawed.

Biologists confuse some of their key scientific concepts when they mix emotional attachments to some organisms with their knowledge of biology.  The human side of scientists is revealed when they speak about invading species. Really? Someone found aliens?  No, they are all rightful inhabitants of this planet whether we fondly remember them from our childhood or not as being local inhabitants.

What is the habitat of any one species on the Earth? Answer: anywhere it can eek out existence in accordance with Darwin's Law of Evolution. They are born to adapt and flourish or die. No animal has a zip code.

To say that one species is a pest or a weed, or is invading is to make a moral human judgment on a fellow creature where no value judgment is needed.  If trees from Asia can survive in North America then they are now local. At one time most trees were tropical, another time they were mostly coniferous.  Everything changes. Habitats change with speciation but their home is still theirs.

Guard against denying species access to their habitat, Earth.