The US Department of State has put together a lot of information for families, and the general public, on the Hague Convention and Adoption. If you have questions and concerns about the implementation of the Hague, please see:
Hague Convention on Intercountry Adoption. Of special interest for families is the pdf download entitled: Information for Parents http://travel.state.gov/family/adoption/convention/convention_462.html
Intercountry Adoption News which contains updates and breaking news as well as the list of Hague accredited agencies and individuals in the US. http://travel.state.gov/family/adoption/intercountry/intercountry_482.html
The USCIS has also put together information,entitled Questions and Answers: Intercountry Adoption Instructions
Post-Hague Adoption Convention Implementation , which can be found at:
The Department of State is also currently updating the Country Specific Information pages, http://travel.state.gov/family/adoption/country/country_369.html, to reflect changes for each country post implementation.