The first 100 days are a presidential milestone and a benchmark that dates back almost a century. The 100-day marker began with Franklin D. Roosevelt in 1933 when he hit the ground running during the Great Depression and called for a special session.

On the day of his inauguration on 20 January, US President Donald Trump promised to deliver the “most extraordinary first 100 days of any presidency in American history”. For decades, the 100-day milestone has been viewed as a symbolic test for a new president - a moment to step back and assess the progress of a new administration.