There actually has been some movement toward making US bills distinguishable by touch, and the US Treasury has a "study group" devoted to finding a reliable method. "Studies" have recently been reported as being "active and ongoing."
Whether or not this group has any active communication between members assigned to it is unconfirmable, and statements about whether the group has ever met together are ambiguous; but there is at least a pretense that advocates for the blind "can find" someone to whom they may complain.
Similar "efforts" have come and gone - or maybe the same continuing effort has just been ignored - since at least the 1950s if my memory serves me well enough that my recollection of "articles about" this isn't one of those things that "I remember despite having never known." I'm quite certain that people at the Perkins Institute were "optimistic" ca. 1960 when I had some communication (including some meetings) in connection with a "class project" to study the feasibility of a typewriter that would produce braille automatically when a sighted person typed "plain text" on it.