http://www.state.gov/s/ct/rls/fs/2004/32678.htm

CPN(M) remains on the U.S. Department of State's Terrorist Exclusion List.

Effects of Designation

Legal Ramifications

Individual aliens providing support to or associated with TEL-designated organizations may be found “inadmissable” to the U.S., i.e., such aliens may be prevented from entering the U.S. or, if already in U.S. territory, may in certain circumstances be deported. Examples of activity that may render an alien inadmissible as a result of an organization’s TEL designation include:

• membership in a TEL-designated organization;
• use of the alien’s position of prominence within any country to persuade others to support an organization on the TEL list;
• solicitation of funds or other things of value for an organization on the TEL list;
• solicitation of any individual for membership in an organization on the TEL list; and
• commission of an act that the alien knows, or reasonably should have known, affords material support, including a safe house, transportation, communications, funds, transfer of funds or other material for financial benefit, false documentation or identification, weapons (including chemical, biological, or radiological weapons), explosives, or training to an organization on the TEL list.

(It should be noted that individual aliens may also found inadmissible on the basis of other types of terrorist activity unrelated to TEL-designated organizations; see 8 U.S.C. §1182(a)(3)(B).)

Other Effects

1. Deters donation or contributions to named organizations.
2. Heightens public awareness and knowledge of terrorist organizations.
3. Alerts other governments to U.S. concerns about organizations engaged in
   terrorist activities.
4. Stigmatizes and isolates designated terrorist organizations.

That thingy up there called "material support" may (and does) include giving water to a designated terorrist while being held at gun-point. It is obnoxious to say the least.

Examples: A teacher in a private school in Kathmandu has a share of his salary taken off his pay-check (by the school administration) to provide donations to the Maoists. He is considered inadmissible.

An innocent, badly beaten and tortured, citizen is dragged naked through the village by the police and forced to point out the houses of anti-government activitsts. He is considered inadmissible because he "assisted" in violation of human rights of the people... became a "perpetrator."

Kuyeko aloo jasto!

Holy crap! Excuse my French.

The word "may" appears five times under "Legal Ramifications."  There is a reason for that.