To say Donald Trump’s pivot to optimism came across as a character transplant would be an understatement.
It was as though Barack Obama took to yelling expletives at passers-by or Bill Clinton fixed his gaze on his shoes. Or perhaps a close-shaven Abraham Lincoln suddenly sprung up on the podium. With the brief exception of his acceptance speech on 9 November, this was America’s first glimpse of an upbeat President Trump. He wore it surprisingly well.
His first address to Congress lasted an hour. It was by far the most presidential speech Mr Trump has yet given. The question is whether he can stick to it for hours, days or even weeks.
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