วีซ่า A-3 เกาหลี immigration decision logic Korea 단기 체류 HiKorea overstay วีซ่าทหารอเมริกันในเกาหลี A-1 visa South Korea foreigner visa korea re-entry permit Korea Korean short stay visa MOFA Korea UN visa Korea diplomatic visa Korea change visa status korea visa extension korea 난민여행증명서 visa-free entry Korea refugee travel document Korean tourist visa foreign service visa Korea 한국 비자 정보 gabay sa Korean visa 대한민국 무비자 입국 immigration fine Korea วีซ่า Fulbright layover Incheon airport visa change korea วีซ่า SOFA Korean transit visa คู่มือวีซ่าเกาหลี overstaying visa foreigner Korea diplomatic family visa Korean diplomatic visa for ambassador hikorea visa extension B-1 비자 재입국 허가 visa ng gobyerno sa Korea hikorea visa change A-2 visa Korea MOFA visa Korea 사증면제 visa ng international organization Korean consular visa extend stay korea ประเภทวีซ่าเกาหลี opisyal na visa Korea visa ng consular staff Korea B-2 visa Korea korea immigration guide visa overstay Korea Korean visa guide for diplomats วีซ่าที่ไม่ต้องลงทะเบียน visa evaluation criteria Korea วีซ่าตามข้อตกลงเกาหลี