President Donald Trump did not place his hand on the Bible as he took the oath of office during his inauguration on Monday.

First lady Melania Trump, who was standing next to Trump, was holding 2 Bibles including the Lincoln Bible that President Abraham Lincoln used to take the oath of office in 1861 but Trump didn't place his hand on either as he raised his right hand to take the presidential oath, which Chief Justice John Roberts issued.

There is no legal requirement for the president to place his hand on the Bible. According to Article VI, Clause 3, of the U.S. Constitution, which covers oaths of office, members of Congress, state legislatures, and executive and judicial officers throughout the country are bound "by oath or affirmation" to support the Constitution.