I spent my career working for the Department of the Interior who funds the Federal Interagency Task Force on Invasives.  I am also a landowner in Rockbridge County where I fight invasives every year.  I also bicycle all over the county and see invasives spreading everywhere.   Recently, our Virginia Master Gardener chapter voted to not sell any plant on the DCR or Blandy list of invasives.  And our lecture series for CLE credits is focused on sustainable gardening.   The sale of plants on the DCR and Blandy lists should be prohibited.   The landscape industry, particularly in the Chesapeake area, is beginning to voluntarily NOT promote these plants and to suggest natives instead.  And they are working with nurseries to move them away from invasives.  If the public is educated to understand why non-natives are bad (Tallamy's Bringing Nature Home) they are much more supportive of changes.   Prohibit Tier 1 and 2 and the plants on the DCR and Blandy lists.