I have today amened details in my ETSY shops to read;
DUE TO CPSIA legislation I no longer ship anything intended for a child of 12 years or younger, to the USA.
This CPSIA law is necessary, I'm sure, on many levels, but it is certainly doing a lot of harm to legitimate businesses and being way over cautious.
The debate goes on.......
etsy.com Forums CPSIA
And for specific information;
US Consumer Product Safety Commission