A major problem with the USA today: we try to measure our success by what "other countries" do...so many, including Supreme Court justices, want us to COPY other nations--a losing proposition for liberty.
US Law has always taken into account what is going on abroad in other civilised countries. The so called ‘M’Naghten Rules’ by which a defendent can not be held accountable for murder due to insantity was adopted by the US states in the 1840s and is still the standard used in most US states to this day. Look it up. It’s interesting.
Besides, I don’t see what the problem is making different denominations different sizes so the blind can tell them apart more easily. It isn’t going to make any difference to your life, but it would make a blind person’s life a hell of a lot easier and less dependent on other people’s honesty...