Exchange operator ICE has warned it is considering relocating its gas-trading business outside the European Union if the group approves a gas price cap. The bloc has been discussing a cap on gas prices for months now, consistently failing to agree on one because of differences of opinion ranging from strong opposition in northern Europe to strong support from southern European members. The European Commission tabled an official proposal for capping the price of gas in November but that proposal was met with reactions ranging from ridicule to ire.…