Then you better wait a little (at least until November) before you send the package. You don't want the immigration officer to doubt their non-immigrant intent when they were coming to US.My parents have been living since Aug08. They are holding multiple 10 year visa which expires in 2012.They have been visiting every year since 2002 and this time when they came the immigration officer told that if they come next time he will give them 1 month visa.