Anime is a art and animation style. ANYONE can make anime, but it's more of a cartoon style that is based out of the Orient. North American cartoons often use thick outlines of characters and details, or are more targeted towards younger age groups (MLP: Friendship is Magic, Powerpuff Girls, Fairly Odd Parents, are good examples of bold outlines). But the older the age group, or wider the targeted audience, you'll often see more original art styles and ideas taken from various artists or used originally (Family guy, Undergrads, Sons of Butcher, Adventure Time, all using different styles).
Heck, watch some of the older anime from the good ol'Dragon Ball Z days, and you'll see that the styles used by Japanese and other studios have changed and been adapted by various artists and producers since then.
So when you see studios in North America producing stuff like Avatar: The Last Airbender, then YES they can make Anime.
And a random clip I found through Youtube and the mention of another few people:
Heck, watch some of the older anime from the good ol'Dragon Ball Z days, and you'll see that the styles used by Japanese and other studios have changed and been adapted by various artists and producers since then.
So when you see studios in North America producing stuff like Avatar: The Last Airbender, then YES they can make Anime.
And a random clip I found through Youtube and the mention of another few people: