There was a need to balance criminal law measures already in place (such as the European Arrest Warrant) with legal instruments that give strong defence rights for citizens ­ in line with the Charter.
Juba kohaldatavaid kriminaalõiguse meetmeid (nt Euroopa vahistamismäärus) tuli tasakaalustada õiguslike vahenditega, millega tagatakse kodanike tugev kaitseõigus ­ vastavalt hartale.