QUOTE
Similar thought here, although we would like to bring my wife's sister here on a more permanent basis. Obviously she is a sister, and not a daughter so it appears all the advice on this site is not applicable to either of our situations.
A USC can sponsor a sister. <--- Good information, thanks!
QUOTE
Having said that, it is really disappointing that the system assumes wrong prior to it's occurrence when it comes to visits and immigration from PI.
Not PI, anywhere. <--- Possibly true, unless of course your SO is from the right county, but PI citizens seem to have it about as rough as anyone, if not more so when it comes to being allowed to visit the USA.
QUOTE
One would think, that a green card involved couple asking for a visit of a relative would suffice to have said visit be allowed, since violation would likely negatively affect the green card holder...
How? <--- By making the green card involved couple's green card status contingent upon the sponsored visitor leaving when agreed to... Not rocket science, and people tend to wish their relatives can one day come to visit them...
QUOTE
My wife's sister lives and works in United Arab Emirates, and as said, we would like to figure out how to have her come live here, not just visit, but it appears there is no way to help? If there is a way to help her we would love to hear about it.
All sorts of ways, if she is relying on her Sister then her Sister needs to naturalise first. <--- Since we have not made it to the stage in the process where my wife can naturalize, this option isn't open to us, but it is nice to know it could be an option a few years down the road.