From the US Citizenship and Immigration Service (USCIS) website:
Effective June 8, 2016, certain Filipino World War II veterans and their spouses that are U.S. citizens and lawful permanent residents (LPRs) may request parole for certain family members. If approved for parole, your family members will be able to reunite in the United States before their immigrant visas become available.
For more information about this program, please click the link below:
Fact sheet on the program (PDF file, requires PDF reader):