H.R.6519: To amend the Immigration and Nationality Act with respect to temporary admission of nonimmigrant aliens to the United States for the purpose of receiving medical treatment, and for other purposes.

Amends the Immigration and Nationality Act to include among nonimmigrant classifications: (1) an alien seeking to enter the United States temporarily and solely to receive medical treatment (including participation in a research study) for a disease or condition that if untreated threatens to undermine the alien's survival or day-to-day functioning with an increased likelihood of progression to a more severe disease or condition; or (2) such alien's accompanying or following son, daughter, spouse, or parent.

Sets forth related conditions of admission.