Q.Wild Violets Are Native To The USA, So Why Does Your Article Call Them Invasive?
Invasive is a term used for species from another part of the world that, once introduced, spread rapidly. Native plants can’t ‘invade,’ but can be aggressive in their spread. Please use the correct terms in your articles, as many people hear ‘invasive’ and assume they’re not native and pull them. Thanks for sharing gardening information freely.

Certified GKH Gardening Expert
There are wild violets in my area that are incredibly invasive. The problem comes when people move plants to a new area, which happens here, as well. The US is quite a large land mass with plants that get transported to other states where they are not native. For example, where I am in the southeast, many junipers and cedars are considered invasive even though they are native to the US. Just not this side. This is true of the northern white cedar and the red cedar, and worse, the box elder.
So even transporting plants across the US will cause an invasive nature. I would check with your local extension service, or invasive species list for your state before purchasing and moving any plant across state lines. It is very irresponsible when people do this, but they don't know that plants can still be invasive even when they are native to a country. There are many regions in the US, so not every plant will react the same to every area.