 Their argument was that the Selle Français had become increasingly crossed with other European breeds since the advent of artificial insemination in 1980 and the opening of the stud book to horses of foreign breeds in 2000; the theory of "jus soli" allowed horses of foreign bloodlines to be called Selle Français if they were born in France.The breeders allying themselves with Leredde prefer to return to the original French Anglo-Norman as a regional sport horse.However, when Anglo-Norman breeders as a whole were asked to vote, they rejected the idea of amending the studbook.