They have already failed to stop immigration: https://www.telegraph.co.uk/news/2021/12/31/three-times-many-migrants-crossed-channel-2021-previous-year/ https://

They have already failed to stop immigration: https://www.telegraph.co.uk/news/2021/12/31/three-times-many-migrants-crossed-channel-2021-previous-year/ https://www.telegraph.co.uk/news/2021/12/31/three-times-many... "Record-breaking 28,381 people made perilous journey across the world’s busiest shipping lane this year"