President Trump is not the first president to skip the official swearing in of their successor.
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President Trump has announced he will not attend Joe Biden's inauguration on Jan. 20th.
While it's rare for an incumbent president to miss the official swearing in of their successor – it has happened before.
The last was Richard Nixon in 1974. But before that, we have to go all the way back to 1869 when Andrew Johnson did not attend one.