Visa and Passport
Some foreign visitors sometimes engage in what is known as a visa run leaving the country for a short period just before the allowed length of stay runs out to restart the clock. However, immigration officers might also deny re entry under these circumstances, especially if done more than once as such acts may signify that the foreigner wishes to permanently reside and might also work in that country. Some countries may have limits as to how long one can spend in the country without a visa, as well as how much time they may have to stay out before restarting the clock, further creating a barrier to visa runs. For example, Schengen countries impose a maximum limit for visitors of 90 days in a 180 day window. In other countries, on the other hand, a visa run is pretty much tolerated, such as the daily commuting between the Malaysian border town of Johor Bahru and Singapore.