Hi Guys. We are currently looking to see if it is possible to bring my husband's unmarried sister (she's in her mid 30's) or his niece (she's 17) to the US in the next year. They would be living with us. If his sister came, she would be our children's nanny and also helping us take care of the house. If his niece came we are considering getting her an aupair visa to also help with the children but so she can also study (part of the aupair visa requirement). I am wondering if anyone else has considered this or has/knows any more information. Thanks!

Amera, similar question here; maybe you'll get something:
http://www.visajourney.com/forums/index.php?showtopic=5412