Helen Huynh's youngest sister, who lives in Vietnam, is a perfect stem cell donor match. But she has been unable to acquire a visa to enter the U.S.
Iranian President Hassan Rouhani ripped Trump's comments to the United Nations General Assembly a day earlier as "ignorant, absurd and hateful."
Psi Upsilon was shuttered after some of its affiliated members were allegedly involved in an assault that could be racially motivated.
Government officials say it could be four to six months before electricity is returned to Puerto Rico, home to nearly 3.5 million people.
Trump has described the refugee swap as "dumb" but has nevertheless said Washington will honor the deal with Australia.