Lawyers for the former Green Beret and his son wanted by Japan for allegedly helping former Nissan Motor Co. boss Carlos Ghosn flee the country argued Monday that U.S. authorities had wrongly arrested them for aiding a crime they say does not exist in Japan: bail jumping.

In a motion, lawyers for Michael Taylor and his son, Peter Taylor, asked a federal judge in Boston to quash the U.S. warrants issued last month for their arrests or release them on bail while their extradition case proceeds.

U.S. authorities arrested the Taylors in May at Japan's request for allegedly smuggling Ghosn out of the country in a box while he was out on bail awaiting trial on financial charges.