Why hasn't Trump received a nobel yet?

Jagland said "We have not given the prize for what may happen in the future. We are awarding Obama for what he has done in the past year. And we are hoping this may contribute a little bit for what he is trying to do," noting that he hoped the award would assist Obama's foreign policy efforts. Jagland said the committee was influenced by a speech Obama gave about Islam in Cairo in June 2009, the president's efforts to prevent nuclear proliferation and climate change, and Obama's support for using established international bodies such as the United Nations to pursue foreign policy goals. The New York Times reported that Jagland shrugged off the question of whether "the committee feared being labeled naïve for accepting a young politician's promises at face value", stating that "no one could deny that 'the international climate' had suddenly improved, and that Mr. Obama was the main reason...'We want to embrace the message that he stands for.'