I want to say 0.9%
There are 43 millions of people disabled and about 387,000 service dogs.
(I kinda looked it up haha)
The agencies have the possibility to work better together even with different legal, geographic and functional authorities, all this is not affected by nothing, because it allows them to work even if they have so many different things.
The Missouri Compromise allowed for Missouri to be a slave state so Maine could be a free state and the union would not be out numbered. However it did not resolve slavery since in the end, there was still slavery and fighting.