Ronald Reagan probably didn't realize he was starting a tradition when he wrote a note congratulating his successor and left it in the Oval Office desk drawer after two terms as president. He did that for George H.

Before he leaves office for the final time, President Joe Biden plans to pen President-elect Donald Trump a letter, CNN is told.

The new president was prompted to search for the letter as he casually took questions from reporters in the Oval Office.

President Trump described the letter that former President Biden left for him in the Resolute desk in the Oval Office as an inspirational letter that advised him to enjoy his term and emphasized the importance of the job.