Dot
Unfortunately Dot I am pretty sure the change in policy in the USA was brought about by pressure from an organisation called the IFHA they have been exerting pressure on the US authorities to move away from race day treatments for some time now and seem to be slowly wining the battle...... not as you suggest due to the chorus of public opinion.
In relation to Thomas Tobin I will not waste my time reading his website.
I am sure you have watched many US law shows on the TV where each side produces an expert witness to say what they need them to say to present a case, my understanding is Dr Tobin does a lot of this work in racing of both codes world wide at a fairly hefty fee.
The US are only moving from race day treatments to all but our current system, you know the one you want to change so much.