The Guardian view on Obama’s legacy: yes he did make a difference | Editorial

The outgoing US president’s performance fell far short of the hopes he and others cherished in 2008. But the prospect of his successor is not the only reason to appreciate his time in officeDonald Trump takes office as president of the United States tomorrow, not on the crest of a wave of national or global hope or goodwill but with the lowest approval ratings of any incoming US leader in modern history. Just 40% of Americans have a favourable impression of the new president. No one has ar