Nothing more. Probably there were people in the voting machine business (manufacturers/ repairers et al) in the U.S. who were familiar with politicians. Not gonna research that one.
"Gee, look! No easily hackable electronic voting machines. I think the US is the only country that allows our elections to be corrupted like that. What does every other country know that we refuse to?"
Guessing now it's probably still a lucrative lobby area. Some of your states are moving away, i think. Think, even a couple have.