Published in his home country of Canada in 2010, Loxton approached several American publishers but was shut out by every one of them. The excuse was always some variation of "The topic is too controversial," or too much of a "hot topic" for American children.
Loxton and Discovery News believe the stone-walling is due to the mistaken belief that "[t]o those who dispute evolution, this smacks of indoctrination, not science education," since the book is aimed specifically at children instead of the reading populace at large.
This isn't terribly shocking considering as late as 2006 up to 1/3 of Americans dismissed evolution out of hand. This despite the fact that, at least for Catholics, the Pope declared evolution to be real and compatible with the faith back in 1996.