20th January, 2009
Herbert Hoover in 1929.
roberts
take lots of vacations if your Obama
chief justice
As a Christian, President Obama swore on a Bible, just like his predecessors.
"affirm' is the word that can be used in place of "swear". I believe that Franklin Pierce is the only president to use "affirm" so far.
The President is sworn in by the Chief Justice of the Supreme Court.
Cooledge
The Chief Justice of the Supreme Court.
uphold constitution
in the USA it will be January 20, 2017
Franklin Pierce was the only president to say "I promise" instead of "I swear" at his inauguration. Herbert Hoover also affirmed the oath, which is a constitutional alternative to swearing.