To begin with, ASYLUM is NOT a Visa (carta visa). Asylum is not about immigration: it is about protection and safety.

I would suggest that before you start the process (and perhaps a war on your own conscience), understand what asylum is (not the common usage you find blabbered among Nepalese but the actual legal and international context stipulated in laws). You can find the details in layman's language at http://www.uscis.gov/files/form/I-589_Inst.pdf  Page 2, and if you want to really get the pithy legal provisions, check Section 208 (a) of the INA at  http://www.uscis.gov/propub/ProPubVAP.jsp?dockey=9d296ed8d97f728392be9cc37bc47260