It is not normal to interfere in the affairs of other sovereign nations unless one of the affected nations requests help. And even then the other nations have

It is not normal to interfere in the affairs of other sovereign nations unless one of the affected nations requests help. And even then the other nations have a lot of additional considerations beyond doing anything but making a sternly worded speech. Most of the time when the USA inserts itself into other affairs people complain about the USA being a bully and sticking its nose where it doesn’t belong. The EU needs to craft a strong response to this by itself or lose a lot of credibility on the world stage. Edit: just to clarify, some of the USA’s other considerations would be the risk of getting called out for being a hypocrite- it has done a few shady extraditions in the past.