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There seems to be a distinct lack of evidence that the veto powers are actually used, though; the backroom deals are alive and well?

A dearth of legislative vetoes: Why the Council and Parliament have been reluctant to veto Commission legislation http://blogs.lse.ac.uk/europpblog/2016/10/25/a-dearth-of-leg...

Legislative Scrutiny? The Political Economy and Practice of Legislative Vetoes in the European Union https://onlinelibrary.wiley.com/doi/abs/10.1111/jcms.12252