The EU is around only 30 years old, there's no way to push for federalism until all the cultures inside it start to internalise being European first. There's a

The EU is around only 30 years old, there's no way to push for federalism until all the cultures inside it start to internalise being European first. There's a lot of EU-skeptics in most countries, pushing too hard towards federalism will very likely break the EU apart from the push back coming from national anti-EU parties. Just look at Brexit to see what anti-EU sentiment can do if the environment is ripe. It'll take at least another 30-50 years for any meaningful push for federalism to be possible.