[Answer] Who is the only U.S. President to serve in the Senate after his presidency?

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Who is the only U.S. President to serve in the Senate after his presidency?

• Andrew Johnson:Andrew Johnson became the 17th president of the United States upon the assassination of President Abraham Lincoln. Andrew Johnson was the first American president to be impeached, although he was not removed from office. After finishing his term, Johnson stayed involved with politics, and became the only U.S. President to serve in the Senate after his presidency. On learning of his election, Johnson commented, "I’d rather have this information than to learn that I had been elected President of the United States. Thank God for the vindication." He did not serve in the Senate long; he suffered a stroke in July 1875 and died shortly thereafter.

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