'Visual Novel' games for consoles in NA?

I was curious to see what other gamers and anime-watchers thinks about this, but I was looking up a bunch of anime-based games that were Visual Novels. I looked up Visual Novels especially for the PSP system, found a bunch, but sadly only in Japanese-language. There aren't any NA releases, right? I checked multiple websites, including but not limited to:

-Wikipedia
-Gamespot
-IGN
-GameFAQs

But to no avail, could not find any Visual Novels (in English) for the PSP. Does anybody know if they will ever import Visual Novels? I'd like to try out some of those games, looks fun.

Also, no, I'm not interested in the Hentai ones. <_<

Example of a Visual Novel game:
http://en.wikipedia.org/wiki/Clannad_(visual_novel)

Example of Wiki's definition of a 'Visual Novel':
http://en.wikipedia.org/wiki/Visual_novel