U.S. President Donald Trump and his wife First Lady Melania Trump attend the Commander in Chief Ball in honor of the inauguration of U.S. President Donald Trump in Washington, U.S., Jan. 20. Reuters-Yonhap

Melania Trump and President Donald Trump dance at the Commander-in-Chief Ball, Jan. 20, in Washington, D.C. President Trump attends some of the inaugural balls after taking the oath as the 47th president. AFP-Yonhap

People attend the Liberty Ball, one of the events being held following U.S. President Donald Trump's inauguration today in Washington, D.C., Jan.20. EPA-Yonhap

President-elect Donald Trump and his wife Melania arrive for church service at St. John's Episcopal Church across from the White House in Washington, D.C., Jan. 20. AP-Yonhap

U.S. President-elect Donald Trump speaks with Vice President-elect JD Vance, left, and Usha Vance during a church service at St. John's Episcopal Church in Washington, D.C., Jan. 20. AFP-Yonhap

U.S. President-elect Donald Trump arrives for his inauguration in the Rotunda of the US Capitol in Washington, D.C., Jan. 20. AFP-Yonhap

President Joe Biden, right, and President-elect Donald Trump stand together before the start of the 60th Presidential Inauguration in the Rotunda of the U.S. Capitol in Washington, D.C., Jan. 20. AP-Yonhap

From left, Priscilla Chan, Meta CEO Mark Zuckerberg, Lauren Sanchez, Amazon founder Jeff Bezos, Google CEO Sundar Pichai and Elon Musk attend the 60th Presidential Inauguration in the Rotunda of the U.S. Capitol in Washington, D.C., Jan. 20. AP-Yonhap

Attendees cheer as President Donald Trump speaks after taking the oath of office during the 60th Presidential Inauguration in the Rotunda of the U.S. Capitol in Washington, D.C., Jan. 20. AP-Yonhap

President Donald Trump, second left, and First lady Melania Trump walk as former President Joe Biden salutes after boarding a Marine helicopter en route to Joint Base Andrews after the 60th Presidential Inauguration in Washington, D.C., Jan. 20. AP-Yonhap

President Donald Trump signs an executive order as he attends an indoor Presidential Inauguration parade event at Capital One Arena in Washington, D.C., Jan. 20. AP-Yonhap