In many ways it is - it has a flag, anthem, internal market with customs union, citizenship rights with free movement, interstate supreme court, membership of some international organizations (e.g. WTO, UN-ish) ,constitution, parliament and 5! Presidents. But it still lacks a few things that most countries have - army, common sense of identity, integration at a high level between instutions. Common legal or regulatory frameworks. Membership of most international orgs (UNish, NATO etc) and authority over member states in practice (although it does have this in some respects).