Foreign workers fill a critical need in the U.S. labor market—particularly in the science, technology, engineering, and mathematics (STEM) fields. Every year, U.S. employers seeking highly skilled foreign professionals compete for the pool of H-1B visa numbers for which U.S. Citizenship and Immigration Services (USCIS) controls the allocation. With a low statutory limit of visa numbers available, demand for H-1B visa numbers has outstripped the supply in recent years, and the cap has been reached before the year ends. Research shows that H-1B workers complement U.S. workers, fill employment gaps in many STEM occupations, and expand job opportunities for all.

Follow this article to learn how to check whether you are prohibited from leaving the country and how long the exit ban lasts according to the law.

The Metropolitan Area Visa (C-3-91) is a type of multiple-entry visa for tourism and business purposes in South Korea, valid for 5 years. It allows multiple entries, with a maximum stay of 30 days per visit, and is exclusively available to Vietnamese citizens whose household registration is in Ho Chi Minh City, Da Nang, or Hanoi.