Parliament has consistently argued that powers should be attributed to, and exercised by, the Union on the basis of the ‘principle of subsidiarity’, i.e. it should exercise those responsibilities - but only those responsibilities - that can be carried out more effectively by common policies than by the Member States acting separately.
Parlaments ir neatlaidīgi cīnījies par to, lai vara tiktu piešķirta Savienībai, kas liktu to lietā, balstoties uz ‘subsidiaritātes principu,’ t.i., tai jāuzņemas tie pienākumi – bet tikai tie pienākumi, – kurus var efektīvāk veikt ar kopējas un nevis atsevišķu dalībvalstu politikas palīdzību.