First Minister, I used the word 'influence' on purpose. The Welsh national interest can only be protected if our MPs vote the right way on crucial Brexit divisions. Plaid Cymru's solution to the border problem, as you'll be aware, is for the UK to stay in the customs union. The UK Labour Party is supposed to be the official opposition in Westminster. You've just said, earlier on, that you want Wales to remain in the single market and that membership of the customs union is the solution to this problem. We heard earlier, also, about the importance of parliamentary democracy. Can you tell us, therefore, why Labour MPs voted against the UK membership of the customs union as recently as 20 November?