seekers to rwanda, saying he will finish the job. rishi sunak insisted his new law would end the merry go round of legal challenges and insisted it was the toughest anti immgration law. he was speaking at a news conference in downing street after the immigration minister robertjenrick, resigned, saying the plans didn t go far enough. our political editor chris mason is in westminster the prime minister tonight stares down the narrowest footpaths, a general, a snicket, with high walls on either side. he faces political, practical and legal challenges, which means the whole future of the policy is on the line, and his authority is on the line too. autumn of last year. rishi sunak becomes prime minister, the rwanda plan is already six months old. but as the seasons turn, no migrants are sent to east africa. winter becomes summer, and still no planes are leaving. and then the supreme court, this autumn, said it was unlawful. the slogan on the lectern is familiar, and boat cross