Did the EU not do any checks ? The EU wanted as many countries in the Euro club as possible. Even now they are trying to strong arm the ones that are not in the Euro into it, such as Romania, Croatia and Bulgaria.....
They did. There are tonnes of articles out there on Greece making their deficit look clean and how they made inflation disappear too. Portugal, Spain and Italy all passed with flying colours also and all of them supposedly did the same thing.
The EU did however realise in 2011 that they needed to tighten it further and dig deeper and they voted and passed a rule to allow this to happen with new members.
But don't let your hate of the EU blind you of the facts.
Did you honestly think Germany and France would bring countries in that could destroy their own ecomony? Really?
Not to say the EU do everything or did everything right but don't pretend they sat back and let all comers in.