Possible Clues:

• A Latin leaving one country for another
• Courts held outside America, in part of Europe
• Country song about American getting back from Detroit
• States covered by courts in European country
• Home of the von Trapps
• Its aura is in Europe
• Strauss country
• US tiara to be found in this country, oddly
• Under the Hapsburgs, it controlled the Holy Roman Empire
• Its schilling was replaced with the euro