Hm... Well, Lang insinuated he was only here because other agents 'couldn't make it', meaning his appearance isn't a personal favor to Mr. Edgeworth. Knowing that much, I find it curious that Interpol is involved at all. If this were simply a local incident, I doubt they would be.

This whole thing may have some sort of international nature to it.

[Which would explain why the Ambassador of Cohdopia would be roped into it. Other individuals here, not so much. Have you pissed off any international entities lately, Mr. Wright?]