Immigration Act Article 7
The National Immigration Agency shall deny or prohibit a national without household registration in the Taiwan Area from entering the State if he/she falls within any of the following circumstances:1. Have joined a violent or terrorist organization or its activities.2. Have been strongly suspected to be involved in turmoil or foreign aggression.3. Have been suspected to be involved in major crimes or to be habitual criminals.4. Have held a passport or entry permit that is illegally acquired, counterfeited, or tampered, or that belongs to another person.The National Immigration Agency may deny or prohibit from a national without household registration in the Taiwan Area who possesses foreign nationality simultaneously entering the State, if he/she falls any circumstances set forth in each Subparagraph of the preceding Paragraph or each Subparagraph of Paragraph 1, Article 18.The competent authority and the Ministry of justice shall jointly enact regulations with respect to standards for recognition establishing major crimes or habitual criminals provided by Subparagraph 3, Paragraph 1, and major economic crimes or major criminal cases provided by subparagraph 6, Paragraph 1 of the preceding Article respectively.
中文原文 入出國及移民法第7條
臺灣地區無戶籍國民有下列情形之一者，移民署應不予許可或禁止入國：
一、參加暴力或恐怖組織或其活動。
二、涉及內亂罪、外患罪重大嫌疑。
三、涉嫌重大犯罪或有犯罪習慣。
四、護照或入國許可證件係不法取得、偽造、變造或冒用。
臺灣地區無戶籍國民兼具有外國國籍，有前項各款或第十八條第一項各款規定情形之一者，移民署得不予許可或禁止入國。
第一項第三款所定重大犯罪或有犯罪習慣及前條第一項第六款所定重大經濟犯罪或重大刑事案件之認定標準，由主管機關會同法務部定之。
一、參加暴力或恐怖組織或其活動。
二、涉及內亂罪、外患罪重大嫌疑。
三、涉嫌重大犯罪或有犯罪習慣。
四、護照或入國許可證件係不法取得、偽造、變造或冒用。
臺灣地區無戶籍國民兼具有外國國籍，有前項各款或第十八條第一項各款規定情形之一者，移民署得不予許可或禁止入國。
第一項第三款所定重大犯罪或有犯罪習慣及前條第一項第六款所定重大經濟犯罪或重大刑事案件之認定標準，由主管機關會同法務部定之。