I thought some folks here might find this interesting. http://www.iamnotthebabysitter.com/our-adoptive-breastfeeding-story/
Adoptive breastfeeding of child from Ethiopia story
Ally- My mom got a foster child taken away because she thought she was breastfeeding the infant (she wasn't) and, when she tried to fight it, they implied that if she did they'd find a way to take ME (her bio-child) away as well.
Some people do BF foster children and just lie about it, but it's very risky to do so. You can sometimes get permission to do it, but it's a difficult process.