http://www.gpo.gov/fdsys/pkg/USCODE-2011-title8/html/USCODE-2011-title8-chap12-subchapII-partII-sec1182.htm
8 U.S.C.
United States Code, 2011 Edition
Title 8 - ALIENS AND NATIONALITY
CHAPTER 12 - IMMIGRATION AND NATIONALITY
SUBCHAPTER II - IMMIGRATION
Part II - Admission Qualifications for Aliens; Travel Control of Citizens and Aliens
Sec. 1182 - Inadmissible aliens
From the U.S. Government Printing Office, www.gpo.gov
§1182. Inadmissible aliens
(a) Classes of aliens ineligible for visas or admission
Except as otherwise provided in this chapter, aliens who are inadmissible under the following paragraphs are ineligible to receive visas and ineligible to be admitted to the United States:
(1) Health-related grounds
(A) In general
Any alien—
(i) who is determined (in accordance with regulations prescribed by the Secretary of Health and Human Services) to have a communicable disease of public health significance; 1
(ii) except as provided in subparagraph (C), who seeks admission as an immigrant, or who seeks adjustment of status to the status of an alien lawfully admitted for permanent residence, and who has failed to present documentation of having received vaccination against vaccine-preventable diseases, which shall include at least the following diseases: mumps, measles, rubella, polio, tetanus and diphtheria toxoids, pertussis, influenza type B and hepatitis B, and any other vaccinations against vaccine-preventable diseases recommended by the Advisory Committee for Immunization Practices,
(iii) who is determined (in accordance with regulations prescribed by the Secretary of Health and Human Services in consultation with the Attorney General)—
(I) to have a physical or mental disorder and behavior associated with the disorder that may pose, or has posed, a threat to the property, safety, or welfare of the alien or others, or
(II) to have had a physical or mental disorder and a history of behavior associated with the disorder, which behavior has posed a threat to the property, safety, or welfare of the alien or others and which behavior is likely to recur or to lead to other harmful behavior, or
(iv) who is determined (in accordance with regulations prescribed by the Secretary of Health and Human Services) to be a drug abuser or addict,
is inadmissible.
(2) Criminal and related grounds
(A) Conviction of certain crimes
(i) In general
Except as provided in clause (ii), any alien convicted of, or who admits having committed, or who admits committing acts which constitute the essential elements of—
(I) a crime involving moral turpitude (other than a purely political offense) or an attempt or conspiracy to commit such a crime, or
(II) a violation of (or a conspiracy or attempt to violate) any law or regulation of a State, the United States, or a foreign country relating to a controlled substance (as defined in section 802 of title 21),
goes on to Crime,Terrorism and other Unlawful activities!
It's quite a long Piece!
So read it on the Gov.-Site!
