Foreign nationals who are harmed in their home country because of their membership in a "particular social group" are allowed to remain in the United States. They get a work permit, a travel permit and, eventually, a green card.
Persons who are deaf can get asylum if they fear returning to their home country. This is because persons who are deaf not only have a disability, but also their own culture. They have their own language and a set of shared experiences. That makes them part of a particular social group. Sadly, in many societies, they are often cast aside by family members and harmed by police and other government authorities. In some countries, persons who are deaf are not even allowed to go to school. Such mistreatment can qualify as persecution.
If you know a foreign national who is deaf and has suffered, please have that person -- or their loved one -- contact the Broward county immigration law firm of Blandon Law at (954) 385-0157.