Antigua
Australia 
Barbados
Belize
Bermuda
Botswana
Canada (English-speaking, i.e. not Quebec)
Cayman Islands
Dominica
Gambia
Ghana
Grand Turks and Caicos Islands
Grenada
Guyana
Ireland
Jamaica
Kenya
Lesotho
Liberia
Montserrat
Namibia
New Zealand
Nigeria
Sierra Leone
Singapore
South Africa (English-speaking, i.e. not Afrikaans)
St. Lucia
St. Vincent
Swaziland
Tanzania
The Bahamas
The British Virgin Islands- St. Kitts-Nevis, Anguilla  Trinidad and Tobago
U.S. Virgin Islands- St. Thomas, St. Croix, St. John
Uganda
United Kingdom
Zambia
Zimbabwe
 

Note: Puerto Ricans are U.S. citizens but the TOEFL is required.