In fact, there are growing and emerging Americans and Europeans who are into the cultivation of Bodhisattva. Just that they are not being label as Buddhist or have not come across the Buddha's way. But that's ok, in Buddhism, it is not about labels but actual practising and cultivation. They are in-fact core Buddhist and good students of the Buddha.
John Robbins (The son of the Baskin Robin Ice Cream Empire) walk away from his family fortune and embark in a lifelong career to save lives. Same as what our Buddha did 2500 years ago. (@ foodrevolution.com)
http://www.foodrevolution.orgSir Paul McCartney (at Vegatarians International Voice for Animals) is heavily active in promoting vegetarian way of lifestyle. And there are many more over at Petatv.com. Very comforting.
http://www.viva.org.ukWe make our world.

cheers,