To begin with the police and the immigration department should have operations where they do checks on people resident in the town ships and other residential areas. this will help in identifying those who are not Malawians and are staying in the country illegally. Alternatively, do random stop and search campaigns on our roads. I know Malawians will complain saying akutichedwetsa pamiseu doing the stop and search campaigns . This is done in many countries in the SADC region. That is how the illegal immigrants in South Africa are found and then deported.