Doesnt the EU pass unfunded liabilities back onto the member states?

Meaning the EU will pass a law or regulation or program that the member states then have to fund with domestic taxes?

Generally speaking for the federal government, if they want to pass a program or requirement the federal government must also pay for that, for example the federal government could not require the state governments to put in bike lane on all road with out giving the states the money to do it.

That is why the Federal government is so large..

Also defense spending, We actually honor our NATO treaty by spending no less than 3% of our GDP on national defense, something the EU nations never do