"Since taking effect Feb. 10, the law passed has made it illegal to sell off-road vehicles and accessories — including used vehicles and replacement parts — aimed at children 12 and younger because of small amounts of lead in alloys used in parts of the vehicles," the article reads. "Smith says he is prohibited even from selling helmets and other safety gear aimed at youth."
Here's the full text: http://www.usatoday.com/news/nation/2009-03-18-motorcycle-kids_N.htm?csp=34
Smith is a 10-time Baja winner, as well as an eight-time ISDT gold medal winner. He was also the star of the movie On Any Sunday.