US President Barack Obama said on Tuesday the Constitution was clear about the nomination process for the Supreme Court and that he planned to nominate someone "indisputably" qualified for the post."The Constitution is pretty clear about what is supposed to happen now," Obama said at a news conference. "When there is a vacancy on the Supreme Court, the president of the United States is to nominate someone. The Senate is to consider that nomination and either they disapprove of that nominee or that nominee is elevated to the Supreme Court.""Historically this has not been viewed as a question."