美國 ESTA 是對免簽證遊客的強制性要求，適用於某些國籍。 符合條件的旅客可以通過旅行授權電子系統 (ESTA) 在線註冊赴美旅遊、過境和商務旅行。 ESTA 授權自簽發之日起 2 年內有效，並允許多次入境，每次最多停留 90 天。 ESTA 申請過程很簡單，需要個人和護照信息，以及一些與安全和健康相關的問題。 建議在預訂旅行時申請 ESTA，但不得少於出發前 72 小時，以便美國國土安全部進行預先篩選。 申請 ESTA 使符合條件的旅客無需傳統簽證即可訪問美國，並且無需在大使館或領事館申請。 但是，出於工作或學習等其他目的前往美國的外國公民必須聯繫其居住國的美國大使館或領事館。 以下國家的公民有資格在線申請美國簽證 安道爾、澳大利亞、奧地利、比利時、文萊、智利、克羅地亞、捷克共和國、丹麥、愛沙尼亞、芬蘭、法國、德國、希臘、匈牙利、冰島、愛爾蘭、意大利、日本、韓國、南、拉脫維亞、列支敦士登、立陶宛、盧森堡、馬耳他、摩納哥、荷蘭、新西蘭、挪威、波蘭、葡萄牙、聖馬力諾、新加坡、斯洛伐克、斯洛文尼亞、西班牙、瑞典、瑞士、台灣、英國。 The USA ESTA is a mandatory requirement for visa-exempt visitors and is applicable to certain nationalities. Eligible travelers can register online through the Electronic System for Travel Authorization (ESTA) for trips to the United States for tourism, transit, and business purposes. The ESTA authorization is valid for 2 years from the date of issue and allows multiple entries, with a maximum stay of 90 days each time. The ESTA application process is simple and requires personal and passport information, as well as a few questions related to security and health. It is recommended to apply for ESTA at the time of booking travel, but not less than 72 hours before departure, to allow for pre-screening by the US Department of Homeland Security. Applying for ESTA enables eligible travelers to visit the United States without the need for a traditional visa and avoids the need to apply at an embassy or consulate. However, foreign nationals traveling to the USA for other purposes, such as work or study, must contact a United States Embassy or Consulate in their country of residence. Citizens of the following countries are eligible for US Visa Application Online Andorra, Australia, Austria, Belgium, Brunei, Chile, Croatia, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Japan, Korea, South, Latvia, Liechtenstein, Lithuania, Luxembourg, Malta, Monaco, Netherlands, New Zealand, Norway, Poland, Portugal, San Marino, Singapore, Slovakia, Slovenia, Spain, Sweden, Switzerland, Taiwan, United Kingdom.