Donald Trump Sworn In as 45th U.S. President

The transcript captures the presidential oath taken by Donald John Trump, where he solemnly swears to faithfully execute the office of President of the United States. He commits to preserving, protecting, and defending the Constitution to the best of his ability, concluding with a traditional invocation for divine assistance.

What phrase does Donald Trump use to conclude his oath?

What title is given to Donald Trump after he takes the oath?