The inauguration marks the official transfer of presidential power, with the executive branch changing hands from the Biden administration to the Trump administration. The 20th Amendment states that a president's four-year term ends at noon on Jan. 20, and the president-elect is sworn in shortly after.

President Donald Trump made only a smattering of false claims in his inaugural address on Monday, mostly sticking to vague rhetoric, subjective assertions and uncheckable promises of action. But then he embarked on a lying spree.