台北市長蔣萬安長子蔣得立的赴美交換生雙重國籍爭議持續延燒，更有網友直接寫信向美方查證，如今美國務院回應的全文曝光。美方明文指出，該交流計畫是提供給「外國國民」參與，且須申請簽證。由於北市研考會主委殷瑋先前曾護航表示，這屆還有3到4名錄取學生也具備美國籍，此話一出立刻引發Threads上大批網友群諷殷瑋提油救火，更直呼這根本是傑出的一手，「4位權貴父母要倒楣囉」。
蔣得立獲選北市教育局公費交換生引爆特權質疑，雖然蔣萬安宣布不領取最高20萬元補助，但殷瑋日前爆料「還有3、4個學生有美國籍」試圖護航，反而讓風波越演越烈。有網友為求真相，直接致信美國國務院負責該計畫的教育文化局（ECA）查證。
美國務院回應指出，交換學者計畫（Exchange Visitor Program）是讓「外國國民」赴美進行教育與文化交流。學生必須由國務院指定的贊助機構接收，取得DS-2019表單，並在母國申請J-1簽證。不過，針對擁有美國公民身分的學生是否具備資格，美方並未正面解答，該名網友已再次去信追問，目前正等待回覆。
美方信件全文曝光後，網路瞬間炸鍋。大批網諷北市府可能涉及詐欺，更笑稱殷瑋為了救主不惜自爆，「看來備取1到4名的同學有機會了」、「殷瑋傑出的一手，有4位權貴父母要倒楣囉」。不過，也有另一派網友反駁，指出蔣得立錄取的是前往加拿大的B組，且擁有美國護照本來就能直接入境，根本不需要向國務院申請外國人專用的學生簽證，痛批檢舉網友多此一舉、丟台灣人的臉。
美國國務院全文：
Thank you for your inquiry. You have reached the Office of Private Sector Exchange within the U.S. Department of State’s Bureau of Educational and Cultural Affairs (ECA). This office administers the Exchange Visitor Program, which is overseen by the Deputy Assistant Secretary (DAS) for Private Sector Exchange in ECA. The Exchange Visitor Program is for foreign nationals who come to the United States for international educational and cultural exchange experiences.
The Secondary School Student Program is part of the Department of State’s Exchange Visitor Program. The program is designed to give foreign secondary school students the opportunity to complete up to one year of academic study at an accredited public or private secondary school in the United States. In addition, these students are given the opportunity to live with an American host family and participate directly in the home life of the family. Some students may also attend and reside at accredited U.S. boarding schools. Students attend school as full time students and may attend for not less than one academic semester (or its quarter equivalent) or more than a full academic year.
Eligible foreign participants must be between the age of 15 and 18-and-a-half years by the first day of school or have not completed more than 11 years of primary and secondary school education excluding kindergarten. Students who have previously participated in an exchange program utilizing the J-1 or F-1 student visa may not participate. Students may not be placed in the homes of relatives.
To participate in the Secondary School Student Exchange Visitor Program, students must be sponsored by one of the Department of State's designated sponsor organizations. Sponsors are responsible for screening and selecting eligible U.S. host families and matching them with students. The sponsor is also responsible for monitoring the students and host families throughout the exchange program. Students accepted into the Secondary School Student exchange visitor program must apply for a J-1 visa in their home country using the Form DS-2019 issued by the designated sponsor.
美方回信中文翻譯全文：
感謝您的詢問。您聯繫的是美國國務院教育與文化事務局（ECA）轄下的私營部門交流辦公室。本辦公室負責管理交換學者計畫，由ECA私營部門交流副助卿（DAS）監督。交換學者計畫是為前來美國進行國際教育與文化交流體驗的「外國國民」所設立。
中學生計畫是國務院交換學者計畫的一部分。該計畫旨在提供外國中學生機會，在美國受認可的公立或私立中學完成最多一學年的學術課程。此外，這些學生有機會與美國寄宿家庭同住，直接參與家庭生活。部分學生也可能就讀並居住在受認可的美國寄宿學校。學生須以全職身分就讀，修業期間不得少於一個學季（或同等學期），也不得超過一個完整學年。
符合資格的外國參與者，在開學第一天必須介於15歲至18.5歲之間，或者完成的中小學教育不得超過11年（不含幼稚園）。過去曾持J-1或F-1學生簽證參加過交換計畫的學生不得參與。學生不得被安置在親戚家中。
若要參加中學生交換學者計畫，學生必須獲得國務院指定贊助機構的擔保。贊助機構負責篩選並挑選符合資格的美國寄宿家庭，並將他們與學生進行媒合。贊助機構也負責在整個交流計畫期間監督學生與寄宿家庭。錄取中學生交換計畫的學生，必須使用由指定贊助機構核發的DS-2019表單，在自己的國家申請J-1簽證。
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