Clearly we need such a licensing system, and such license would need to be displayed on the service animal. The lack thereof seems like yet another indicator that our government cannot legislate itself out of a paper bag.
The problem is that when the ADA was passed no one conceived that a change in culture would make it common for people to want to bring their dogs into restaurants and coffee shops.
And now that it is common, there’s no political will to revisit this issue.
There's probably political will at the local or state level in some areas, but of course local and state laws can't override a federal one like the ADA.
I completely agree, though unlike the author I don't really have an issue with people bringing dogs into some kinds of businesses. Restaurants and grocery stores no, but something like a hardware store I'm fine with.
Non-food establishments generally don't ban dogs, or don't enforce it at all. I've taken a dog into many such places. It's my wife's chihuahua, so I just carry her - no risk that she will use the store as a latrine.