European Union Bill

With regard to Government amendment 57, will the Minister make it clear to the Committee why the Government have singled out the European public prosecutor's office in their opt-in to justice and home affairs and why they are not including other measures in that area on which they have a decision to opt in? The amendment is slightly untidy, so will he clarify that it will amend clause 6(2), as the European public prosecutor's office is mentioned in clause 6(4)(c)?