US Republican presidential nominee Donald Trump on Friday delivered yet another call to African-American voters, vowing to restore law and order and increase job opportunities, in an effort to raise his single digit standing with one of America's largest minority groups."What do you have to lose by trying something new like Trump," Trump said, targeting his remarks at African-Americans. "You're living in poverty, your schools are no good, you have no jobs, 58% of your youth are unemployed. What the hell do you have to lose?"Trump attacked his Democratic rival Hillary Clinton and vowed to protect the jobs of minorities from immigrants."Hillary Clinton would rather provide a job to a refugee from overseas than to give that job to unemployed African-American youth in cities like Detroit who have become refugees in their own country," Trump said.