The answer to his question is simple: There are no DREAMers currently serving in the military. Although the Pentagon allowed undocumented immigrants to join and serve in the United States military in 2014, there are several qualifications that they still have to meet: 1) They must qualify as DREAMers, 2) They must have graduated from high school or earned a GED, and 3) They must have kept a clean and legal record while they were illegally staying in the country.
Although the announcement gave hope to the DREAMers, they can only serve the military once they fill out a 127-page form asking several questions like whether they have been terrorists, has advanced degrees, and can speak other rare languages. Aside from this, they will have to compete for only 1,500 slots against hundreds of thousands of legal immigrants with non-permanent visas who already applied under the same criteria.