The founders weren't dealing with a province that had been cleansed of its historical inhabitants by Hitler and Clinton and invaded by an influx of illegal jihadi immigrants from a neighboring third world muslim craphole.
So the Colonies weren't built on land that was historically inhabited by Indians? You really need to think these things through. The Founders also certainly had eyes on continuing the spread West, irrespective of who lived there 'historically'.
Political self determination only applies to the legitimate owners of the land. Kosovo is majority muslim today only because muslims forcefully invaded it in the 1400's, and have been forcefully driving out its original Serb inhabitants ever since with no compensation for their stolen lands.
The Indian analogy becomes more fitting all the time, doesn't it? Unless you want to contend that the original European invaders (since the 1500's) of the Americas were atheists that didn't drive the Indians west, breaking treaty after treaty in the process. Should only the native peoples of the Americas have political self determination on this continent, since the European invaders only came a few centuries ago?
The actual indigenous people of the American southwest are the Indian tribes such as the Comanches, Apaches, Pueblos, Coushattas etc. all have reservations in these states today or are mixed among the Anglo inhabitants.
So, is the equitable solution having the Kosovar muslims create some reservations on the parts of Kosovo they don't want (today) and herding the Serbs there? Would that strike you as ok?
Personally, I think Clinton's war against Serbia, lacking Congressional authority and exceeding the statutory 'emergency' time period of the War Powers Resolution was the primary reason he should have been impeached. Sadly, the Republicans had no spine and did not force him to stop. I care as much about the refugee situation in Kosovo as I do Darfur, which is to say - zero. If you want to help the Serbs take on the Kosovar muslims, well Johnny get yer gun and go do it. Form an Abraham Lincoln Brigade of like-minded friends and do what you think is best. Just for god's sake don't drag the American taxpayer and soldier into, because it has zero to do with protecting and defending the Constitution of the United States.