Visa Ineligibilities are mentioned in the immigration and Nationality Act (INA). Some of the reasons can be:

1. Sometimes, a visa gets denied because the gazette officer might not be able to fetch full disclosure of information about the applicant.
2. Indulgence in malevolent activity like drugs or going against U.S. laws an be the other reason for the denial of a visa.
3. N government entertns applicants from criminal backgrounds.
4. A candidate will be denied a visa if he/she is suffering from mental/physical health problems that may pose a threat to someone’s life/property.
5. One more reason can be denied by the Secretary of Labor to perform any skilled or unskilled labor.
6. A candidate having a previous record of being shown as an illegal entrant with be counted ineligible to come to the U.S.
7. Any immigrant who is coming to the U.S. with the wrong intention of polygamy is considered inadmissible for a visa.
8. If a person is indulged in international child abduction, he/she would not be allowed to enter the U.S. on a Tourist/Permanent basis.

So, check your eligibility to apply for the U.S. Tourist Visa from India in less than a minute