What's False This button was not used exclusively for ordering Diet Cokes, nor was it installed during the Trump administration. Previous presidents also used this general service button. Origin On Jan. 21, 2021, as U.S. President Joe Biden settled into the Oval Office the day after his inauguration, a report started circulating that the newly-elected president had removed a “Diet Coke button” from the Oval Office. This, of course, begged the question: Did former President Donald Trump have a Diet Coke button in the Oval Office? Trump truly had a button in the Oval Office that he used to order Diet Cokes. However, this call button wasn’t the invention of the Trump administration. Photographs show that former Presidents Barack Obama and George W. Bush also had service buttons in the Oval Office that they could use in a similar fashion.