Why do they always use American voice actors?

[Khuutra]

Kasz216 said:

Here me out...

I was playing Bladestorm the other day... a game where the accents are just attrocious... horrible people doing bad brittish accents...

and it hit me...

Why didn't they just get british people to do the voice acting.  I mean, why get Americans attempting to do British Acting?

Why don't they get someone who speaks english and has the actual accent they want.... rather then hire people and have them attempt really bad voice acting.

I mean... why isn't this common sense?

Final Fantasy 12 did this right, incidentally.