Tory leadership candidates Rishi Sunak and Liz Truss, who will become the UK’s next prime minister when elected leader of the right-wing party, are putting “illegal migration” at the centre of their electoral platforms, leading to widespread criticism from opposition MPs. Both prime minister hopefuls embraced the controversial Rwanda plan, which will see migrants found traveling irregularly to the UK deported to Africa, while Liz Truss vowed to expand the scheme to other African countries. Sunak, who trails Truss in all opinion polls, is making a play to win over Conservative Party members wit…