I am one of the few to stand up for the EU on VV, so when I see claims made against the EU based on fiction or that are over-egged, and there are more than a few, I have no problem in making a challenge and I always try to do it in a reasonable fashion.
Leaving the EU and bringing back the death penalty is one such case.
Suff said: "Once we have left the EU, bring back the death penalty for convicted drug dealers."
Making such a claim is one such case. It places the poison in people's minds that we do not have the death penalty because of the EU, but that is only part of the story. The implication being that once we leave the EU we are free to reinstate the death penalty any time we like purely and simply because we have left the EU: it is not true.
It is true that the present day EU (evolved from the EEC) requires members and applicants to be signatories of the ECHR and to forego the death penalty, but it was not always the case. France had it till 1981 and Italy till 2009. Once we leave the EU we will not be bound by any of of that.... but we will still be in the ECHR. The EU will have no part to play in how we deal with the ECHR or whether we have the death penalty or not.
The UK, of its own free will, abolished death penalty in 1965. pre-empting the EU by some decades. The UK was also a founder member of the Council of Europe out of which came the ECHR. The CofE and ECHR are not part of, nor are they controlled by, the EU though the EU is a member, signatory and ratifier of their articles and protocols.
If anything prevents the UK reinstating the death penalty then being a signatory to the ECHR is one. Once we have left the EU withdrawal is a possibility, but still nothing to do with the EU, and it is fraught with dangers. Doing so would send us to the periphery of the Council of Europe along with Russia, Armenia, Azerbaijan and Belarus - what great company to be in.
Another is our own parliament's reluctance to reinstate it. As I said earlier a number of Bills have been proposed to bring it back in some cases and every one has been defeated.