What do you mean by "becoming"? The extradition treaty that the US most likely invoked in this case has been in force for almost 50 years.

https://www.oas.org/juridico/mla/en/traites/en_traites-ext-c...

So many double standard to the legal system from US & Canada.

http://www.globaltimes.cn/content/1130954.shtml

And yes, you remind me that I use the wrong word, it should not be "becoming", it should be "always". :)