Yes, if all the non-native tree species were removed from U.S. urban areas there wouldn't be much left.Oh man if you killed siberians elms in Detroit you would lose half its canopy. some people believe just its species is grounds for imediate removal. I am so thankful for that tree. Mulberries and boxelders are also underappreciated.
Lady asked me the other day when we were gonna remove all the honeysuckle...asked her "Whatcha think is holding the bank on that big creek at this point?"Some places in NM are 100% Ulmus pumila, Chinese elm. .The nativists who want to remove them have no viable plan for replacement.
At the 2020 ISA conference you should be able to see how they are managed in Albuquerque with specified reduction pruning. Come on down, Dave!