Following-up on item 2 in this post, here's a news report on a Bosnian court decision:
Bosnia's top court has annulled an import tax law which it said violated a regional free trade treaty and commitments to the EU, while about 1,000 farmers and food producers protested outside the court building.
The law imposed duty on around 1,000 imported products, and was approved by parliament in June despite strong objections from the European Union and neighbouring countries....
The European Union said the law breached the Central Europe Free Trade Agreement (CEFTA) agreed by Balkan countries in 2006 to boost regional trade and prepare for EU single market entry.
It said the law also violated Bosnia's commitments under its 2008 Stabilisation and Association Agreement (SAA) with the EU, the country's first formal contract with the 27-nation bloc.
Based on the article, it sounds like the court struck down the law as a result of its conflict with international trade agreements. However, the actual reasoning may be more nuanced than reported.
