<P> Diplomatic relations are maintained between the US and the EU, as an independent body, as well as all EU member states . </P> <P> The EU is represented in the US by the Delegation of the European Union to the United States in Washington, D.C. Opened in 1954, it was the first overseas delegation of the EU's forerunner, the European Coal and Steel Community (ECSC). The current EU ambassador to the United States, since 2014, is David O'Sullivan . Additionally, all 28 EU member states have an embassy in Washington, D.C. </P> <P> The United States' diplomatic mission to the EU is the United States Mission to the European Union in Brussels . The current US ambassador to the EU, since 2014, is Anthony Gardner . The United States established a diplomatic mission to the ECSC in 1956 in the city of Luxembourg and, in 1961, the United States Mission to the European Communities in Brussels . The US has embassies in all 28 EU member states . </P> <P> The Transatlantic Economic Council is a bilateral forum for economic cooperation between the EU and US established during the 2007 US - EU Summit . It meets at least once per year and is jointly headed by the US Deputy National Security Advisor for International Economic Affairs and the EU's Commissioner for Trade . </P>

Is the united states in the european union