ok, there is something not mention in your text which is: "asylee, refugee"
this is the site:
http://uscis.gov/graphics/medical_exam.htm
here is the rest: read the last paragraph please.
"Most communicable diseases are easily treatable. If the medical tests are positive for a communicable disease, the Civil Surgeon will recommend a course of treatment. Some medical conditions are not easily treatable. However, you may still receive adjustment of status by filing a waiver application. You are eligible for a waiver if:
You are the spouse or unmarried son or daughter or the minor, unmarried adopted child of a U.S. citizen or LPR; or
You have a son or daughter or lawfully adopted child who is a U.S. citizen or LPR; or
You are eligible for classification as a self-petitioning spouse or child (including your derivative children) because of abuse.
The waiver may be granted according to the terms and conditions (which can include posting a bond) determined necessary by USCIS in consultation with public health officials, based on the nature of the medical condition. If you are applying for adjustment of status in the United States, you must file Form I-601, Application for Waiver of Grounds of Excludability, including payment of fee, with the USCIS office considering your adjustment of status application.
If you are applying for an immigrant visa at a U.S. Consular post abroad, you must submit your waiver application to the Consular post that is considering your immigrant visa application. The Consular post will send your waiver application to the overseas USCIS office in that jurisdiction for a decision.
If you are applying for admission as a refugee, or for adjustment of status at least 1 year following your initial admission as a refugee or the grant of asylum, you may be granted a waiver for humanitarian reasons, to assure family unity, or when it is otherwise in the public interest. You must file Form I-602, Application by Refugee for Waiver of Ground of Excludability, but you are not required to pay a fee."
with asylees it's another story. by law they are admissible by submitting waiver form i-602...
also: check this:
http://www.lgirtf.org/template.php?pageid=179
if you can't open it. type " type immigration equality" that would get you there.
http://www.lgirtf.org/template.php?pageid=177
http://uscis.gov/graphics/formsfee/forms/i-602.htm
i hope this will help.
good luck.
happy hollidays itsanis
and to everyone on this forum