It's Nebraska, they have the room....
j/k, here's a real reason they need to bring in some
new blood
You need to replace your kids, who don't want to live in the sticks, with someone... why not illegals? Legal people have the option of going anywhere they want, like natural borns, and I don't think many are choosing Nebraska.
Your common sense may dictate that the state has to follow federal law... but state vs. federal law has been a sticky wicket since the inception of our great country. We even fought a war with ourselves over that little issue that wouldn't die quietly. What's good for the state might not be good for the federal and vice versa... there is bound to be conflict. Look at pot laws and to a lesser extent gay marriage; two of the more hot button issues where some states and the federal government are having a hard time seeing eye to eye.