Under the amendments, NLB would be banned from paying damages in cases before Croatian courts.
The aim is to limit the hiring of Croatian workers and their family members depending on the needs of the Slovenian market.
But also insists on border checks staying between Slovenia and Austria.
Court notes that equal treatment of creditors and protection of their interests is also a basic principle of the EU insolvency law.
The border dispute goes to the next level, but only one EU member has ever successfully sued another.
Mr Prnjat is wanted in connection with 100 kilos of cocaine that was seized in the Croatian port of Rijeka.
Issue relates to Yugoslav-era deposits in Croatian branch of the bank.
EU Court of Justice to be told that Croatia has violated treaty.
Two-pronged strategy will use the Lisbon Treaty and charges of illegal fishing.
But expresses support for EU expansion in Balkans.