Here are some references on Kinder Eggs from the US CPSC.
1997 Recall
http://www.cpsc.gov/en/Recalls/1997/...ntaining-Toys/
From the above:
Some of the toys have small parts that present a serious choking and aspiration hazard to children under three years of age.
CPSC considers the toys within the eggs as presently imported and sold to violate CPSC's small parts regulation with respect to children under three.
The Ferrero Group, the manufacturer of Kinder chocolate eggs, does not market this product in the United States. Ferrero said that it markets the product in other countries solely for children three and older and designs these toys to be assembled by older children. Ferrero considers the product safe for children three years and older.
Additional enforcement 2006
http://www.cpsc.gov/en/Newsroom/News...oung-Children/
Edited to add, I live in Canada, and can eat Kinder Eggs three times a day if I like. I used to buy one daily for my child when she was in daycare at age 2.5. But every child doesn't have the same level of parental supervision and CPSC is taking care of the country, not just the well-supervised children of responsible parents.