"Clearly, with the city of Chicago now being affected, its a new challenge and a new level of funding that will be needed," Durbin said.
"There's an inoculation process that's only good for healthy trees. That's why we're starting our campaign out there to actually inspect all the healthy trees," said Commissioner Mike Picardi of the Department of Streets and Sanitation.
More than 20 percent of all the trees in the city of Chicago are ash.