Abraham Lincoln was a licensed bartender

In fact, Abraham Lincoln is the only U.S. president to hold this job! He was a co-owner of the pub ‘Berry and Lincoln’ in Springfield, Illinois with a man named William Berry. 

It was hard for Berry and Lincoln to run a bar together because while Lincoln preferred not to drink, Berry was an alcoholic and would sometimes drink the customers’ orders before they could. In 1834, Lincoln ran for state legislator and won so he gave up the bartending business. The entire enterprise was abandoned by 1840 due to Lincoln’s politics and Berry’s death five years prior in 1835.
For details on the President’s pub, click the Source below.

(Source)