Trump said on Monday, according to CNN, that if elected he would “suspend immigration from areas of the world when there is a proven history of terrorism against the United States, Europe or our allies, until we understand how to end these threats”.

All in 40 countries are affected.

These received 2,571,762 non-immigrant visas in 2015 from the US State Department. They also received 158, 877 immigrant visas. The US Department of Commerce estimates that more than 7.5 million tourists from these countries visited these countries in 2014.

France, Belgium and the UK are among the countries that do not require tourist visas to visit the US.

The maths, done by CNN based on the State Department’s Annual Report, lists Malaysia as among the 12 countries listed as “terrorist safe havens”. These countries had 496,436 non-immigrant and 74,283 immigrants visas in 2015.

The other countries listed together with Malaysia are Somalia, Mali, Libya, Egypt, Iraq, Lebanon, the Philippines, Indonesia, Afghanistan, Pakistan and Yemen. These countries are considered able to organise, plan, raise funds, communicate, recruit, train, transit and operate “safe havens” for terrorists.

Iran, Sudan and Syria are listed by the US State Department as “state sponsors of terror”. They received 45,935 non-immigrant and 10,722 immigrant visas in 2015.

A further 14 countries, not considered “safe havens”, are listed as nations where terror networks are based and operate. The list has broadened to include terrors groups ranging from ISIS to al Qaeda and affiliates who have successfully recruited and infiltrated numerous operatives and cells in countries ranging from Turkey and Russia to Nigeria and India. The 14 countries received 1,741,169 non-immigrant visas and 63,106 immigrant visas in 2015.

A further 11 countries which received 295, 695 non-immigrant and 16,883 immigrant visas in 2015, fall into the list of “other countries” with active terror cells.