What country has the fewest requirements for residency and work permits?
The answer to this question is a function of the relationship between the job seekers country of origin and the host country. The U.S. Department of State recognizes 193 independent nations and an additional 62 states with special sovereignty. To address all the possible combinations of country of origin and host countries, TESOL would have track 65,025 separate laws! As a job seeker, you need to research the residency and employment laws that apply to citizens of your country of origin.