London — The U.K. government has proposed new legislation aimed at stopping migrants and asylum-seekers from entering the country without prior permission. The bill introduced Tuesday by the government in the House of Commons has been called "profoundly concerning" by the United Nations refugee agency and "morally bankrupt" by opposition lawmakers. If passed, the legislation would mandate the deportation of migrants or asylum-seekers who enter the U.K. irregularly, such as on small boats across the English Channel from France, and ban them from returning to the country or applying for British citizenship. Alongside the legislation, U.K. Home Secretary Suella Braverman...