Donald Trumps wife Melania made a rare - and short - campaign speech at a victory rally after her husbands win in the Republican primary in South Carolina.<br />Welcome to the official BBC News YouTube channel. Interested in global news with an impartial perspective? Want to see behind-the-scenes clips and footage .<br />US President Barack Obama has said Republican hopeful Donald Trump would not win the presidency because it is a serious job. Subscribe to BBC News .<br />The new host told Ellen about life growing up in South Africa!
