1. Those having no genuine and valid passport or document that can be used in lieu of a passport; or those having a genuine and valid passport or document for use in lieu of a passport without a visa issued by Royal Thai Embassies or consulates in foreign countries or by the Ministry of Foreign Affairs. Exceptions are aliens for whom no visa is required in certain special instances.

2. Those who have no appropriate means of earning a living once they have entered the Kingdom.

3. Those who, having entered the Kingdom to take up employment as laborers or practice other forms of manual work that require no special skill or training, or who violate the Alien Employment Act.

4. Those who are mentally unstable or who suffer from any of the diseases proscribed in the Ministerial Regulations. (c)

5. Those who have not been vaccinated against smallpox or inoculated or undergone any other medical treatment for protection against contagious diseases, and have refused to have such vaccinations administered by the Immigration Bureau doctor.

6. Those who have been imprisoned by the judgment of a Thai court or by a lawful injunction, or by the judgment of the court of a foreign country, except when the penalty is for a petty offence or negligence or is specifically cited as an exception in the Ministerial Regulations.

7. Those who have exhibited behavior which would indicate possible danger to the public or the likelihood of their being a public nuisance, a threat to the peace or safety of the public, or the security of the public or the nation, including those under warrant of arrest by competent officials of foreign governments.

8. Those for whom there is reason to believe that entrance into the Kingdom is for the purpose of being involved in prostitution, the trading of women or children, drug smuggling or other activities that are contrary to public morality.

9. Those having no money or bond as prescribed by the Minister under Section 14. (d)

10. Those categorized as persona non grata by the Minister under Section 16. (e)

11. Those who have been deported by either the Government of Thailand or that of another foreign country; those who have been sent out of the Kingdom by competent officials at the expense of the Government of Thailand unless the Minister makes an exemption on an individual, special-case basis.

c Leprosy, infectious tuberculosis, chronic elephantiasis, drug addiction, tertiary syphilis. d Reference: announcement of the Ministry of Interior, dated 8 May B.E. 2543 (A.D.2000).

(1) At least of 10,000 baht for a holder of a transit visa or "visa not required" category and visa on arrival (at least of 20,000 baht for a family).

(2) At least of 20,000 baht for a holder of a tourist visa or non-immigrant visa (at least of 40,000 baht for a family).

In instances where, for reasons of national welfare or the safeguarding of the public peace, culture, morality or welfare, or when the Minister considers it improper to allow any foreigner or group of foreigners to enter the Kingdom, the Minister shall have the power to exclude the said foreigner or group of foreigners from entering the Kingdom.

In cases of persons prohibited by the Ministry under Section 16 (foreigners who have been imprisoned for criminal offences involving work in professions or occupations that are prohibited by law, with exception made for minor offences, or offences committed through negligence), the Immigration Bureau will submit their names and histories to the Minister of Interior for a decision concerning the possible prohibition of the person or persons concerned from entering the Kingdom.

No time limitations apply in cases of persona non grata status, so that in cases where a person who is prohibited from entering the kingdom has died, his or her children may encounter problems upon attempting to enter the country, should they share a common name. In such cases, the full name and date of birth of the applicant must be checked.