Brexit refers to the UK's potential withdrawal from the European Union. In June 2016, UK voters approved leaving the EU in a referendum. Reasons for Brexit included concerns over immigration, a loss of sovereignty to EU institutions, and the ability of the UK to determine its own laws and trade policies. Leaving the EU could negatively impact the UK economy through reduced trade and foreign investment, but may allow the UK more control over its borders and regulations. The economic effects of Brexit remain uncertain and will depend on the terms of the UK's withdrawal.