Unilateral action on trade by European Union member states is unacceptable, a European Commission spokesperson said on Sunday, after Poland and Hungary announced bans on grain and other food imports from Ukraine to protect the local agricultural sector. After Russia’s invasion blocked some Black Sea ports, large quantities of Ukrainian grain, which is cheaper than that produced in the European Union, ended up staying in Central European states due to logistical bottlenecks, hitting prices and sales for local farmers. The issue has created a political problem for Poland’s ruling nationalist Law and Justice (PiS) party in an election year as it has angered people in rural areas where support for PiS is usually high.