Back in February, the DRC, Namibia, and Angola agreed to return their citizens after the Home Secretary threatened to ban visas for the countries’ ministers, diplomats, and tourists.
It meant up to 4,000 convicted criminals, including murderers, rapists and illegal migrants, from the three African countries could be deported to the states.
After the success of the sanction threats, Ms Mahmood warned other countries that they faced similar visa restrictions if they continued to refuse to take back their criminals, illegal migrants and rejected asylum seekers.
Other countries that have been highlighted as being resistant to taking back illegal migrants include India, Pakistan, Nigeria, Bangladesh, Somalia, Egypt and Gabon.