The US District and other federal court which the CFTC acts through has authority through their laws and the connection with other nations to bring legal recourse to foreign companies.
So is the Irish government or courts involved in this case? Because if they're doing what the Irish government tells them to, that's a whole other ball of wax.
You're very unlikely to see the US governement sue a foreign company over more munane things, this has to do with the sale of commodities futures, not stuffed bears.
Yeah, but I don't really trust the government when they say "don't worry, we'll only use this discretionary power when it's really important". That generally ends up being only a matter of time before it's abused.
If you will for a moment consider if the CFTC had no legal authority to sue them and consider how corporations would utilize their unregulated foreign futures exchange or any similar design.
Sure, but we can't let the ends justify the means. The CFTC nor any other agency should overstep its authority, no matter how beneficial the end result. I'm not saying they did this time, I don't really know enough details.