I believe the U.S. has 13 states that have developed some legislation, but it didn't seem clear whether there were any prosecutions, so I don't know how effective it has been. That legislation is referenced in the notes I took from the Waterson report. It came out at the end of Obama's time. It was one of the last things he brought forward. I don't know if a similar situation has happened there, but the legislation in the States intended to ban bots, have fines, civil penalties and, on occasion, jail sentences.
New York was fairly progressive. They had a report done in early 2016 on allocation of tickets prior to the general sale, and the use of bots. Brokers would face civil penalties if caught, but the attorney general suggested criminal penalties. The industry was obliged to play a substantial role in tackling the problem.
That's why, if you're looking at developing some legislation, it's critical that you have all those partners at the table.