Nationality and Borders Bill

My Lords, I thank the noble Baronesses, Lady Ritchie of Downpatrick and Lady Suttie, for raising this issue, and I think some very good questions have been asked. I have a different question. In the absence of an electronic travel authorisation, are there problems in enforcing immigration, asylum or indeed criminal law? Can we be reassured that there would not be an incentive for people who want to come to the UK to come in large numbers through the Republic of Ireland? That would be my one concern in trying to address the very real issues across the border that have been identified, and which you see in other countries where you have borders—especially where there has been a practice of having no border.