At Mount Rushmore, Trump digs deeper into nation's divisions
President Donald Trump smiles at Mount Rushmore National Memorial, Friday, July 3, 2020, near Keystone, S.D. (AP Photo/Alex Brandon)

President Donald Trump smiles at Mount Rushmore National Memorial, Friday, July 3, 2020, near Keystone, S.D. (AP Photo/Alex Brandon)

Jul. 04, 2020 01:15 AM EDT
Trump supporters, some who were blocked from reaching Mount Rushmore by a blockade set up by Native American protesters, gather near where protesters clashed with law enforcement officers in Keystone, S.D., Friday, July 3, 2020.. (AP Photo/Stephen Groves)

Trump supporters, some who were blocked from reaching Mount Rushmore by a blockade set up by Native American protesters, gather near where protesters clashed with law enforcement officers in Keystone, S.D., Friday, July 3, 2020.. (AP Photo/Stephen Groves)

Jul. 03, 2020 10:41 PM EDT
Native American protesters form a roadblock on the road leading to Mount Rushmore ahead of President Donald Trump's visit to the memorial on Friday, July 3, 2020, in Keystone, S.D. (AP Photo/Stephen Groves)

Native American protesters form a roadblock on the road leading to Mount Rushmore ahead of President Donald Trump's visit to the memorial on Friday, July 3, 2020, in Keystone, S.D. (AP Photo/Stephen Groves)

Jul. 03, 2020 10:30 PM EDT
President Donald Trump speaks at Mount Rushmore National Monument Friday, July 3, 2020, in Keystone, S.D. (AP Photo/Alex Brandon)

President Donald Trump speaks at Mount Rushmore National Monument Friday, July 3, 2020, in Keystone, S.D. (AP Photo/Alex Brandon)

Jul. 03, 2020 11:12 PM EDT
Protesters clash with a line of law enforcement officers in Keystone, S.D., on the road leading to Mount Rushmore ahead of President Donald Trump's visit to the memorial on Friday, July 3, 2020. (AP Photo/Stephen Groves)

Protesters clash with a line of law enforcement officers in Keystone, S.D., on the road leading to Mount Rushmore ahead of President Donald Trump's visit to the memorial on Friday, July 3, 2020. (AP Photo/Stephen Groves)

Jul. 03, 2020 10:42 PM EDT
President Donald Trump, accompanied by first lady Melania Trump, stands during the national anthem with a flyover by the U.S. Navy Blue Angles at Mount Rushmore National Memorial, Friday, July 3, 2020, near Keystone, S.D. (AP Photo/Alex Brandon)

President Donald Trump, accompanied by first lady Melania Trump, stands during the national anthem with a flyover by the U.S. Navy Blue Angles at Mount Rushmore National Memorial, Friday, July 3, 2020, near Keystone, S.D. (AP Photo/Alex Brandon)

Jul. 04, 2020 01:15 AM EDT
Fireworks light the sky at Mount Rushmore National Memorial, Friday, July 3, 2020, near Keystone, S.D., after President Donald Trump spoke. (AP Photo/Alex Brandon)

Fireworks light the sky at Mount Rushmore National Memorial, Friday, July 3, 2020, near Keystone, S.D., after President Donald Trump spoke. (AP Photo/Alex Brandon)

Jul. 04, 2020 01:02 AM EDT
President Donald Trump stands on stage before he speaks at the Mount Rushmore National Monument Friday, July 3, 2020, in Keystone, S.D. (AP Photo/Alex Brandon)

President Donald Trump stands on stage before he speaks at the Mount Rushmore National Monument Friday, July 3, 2020, in Keystone, S.D. (AP Photo/Alex Brandon)

Jul. 03, 2020 10:35 PM EDT
President Donald Trump speaks at Mount Rushmore National Memorial, Friday, July 3, 2020, near Keystone, S.D. (AP Photo/Alex Brandon)

President Donald Trump speaks at Mount Rushmore National Memorial, Friday, July 3, 2020, near Keystone, S.D. (AP Photo/Alex Brandon)

Jul. 04, 2020 12:58 AM EDT
Protesters clash with a line of law enforcement officers in Keystone, S.D., on the road leading to Mount Rushmore ahead of President Donald Trump's visit to the memorial on Friday, July 3, 2020. (AP Photo/Stephen Groves)

Protesters clash with a line of law enforcement officers in Keystone, S.D., on the road leading to Mount Rushmore ahead of President Donald Trump's visit to the memorial on Friday, July 3, 2020. (AP Photo/Stephen Groves)

Jul. 03, 2020 10:24 PM EDT
President Donald Trump watches a flyover by the U.S. Navy Blue Angles at Mount Rushmore National Memorial, Friday, July 3, 2020, near Keystone, S.D. (AP Photo/Alex Brandon)

President Donald Trump watches a flyover by the U.S. Navy Blue Angles at Mount Rushmore National Memorial, Friday, July 3, 2020, near Keystone, S.D. (AP Photo/Alex Brandon)

Jul. 04, 2020 12:57 AM EDT
Native American protesters demonstrate in Keystone, S.D., ahead of President Donald Trump's visit to the memorial Friday, July 3, 2020. Protesters are advocating for the Black Hills to be returned to the Lakota people. (AP Photo/Stephen Groves)

Native American protesters demonstrate in Keystone, S.D., ahead of President Donald Trump's visit to the memorial Friday, July 3, 2020. Protesters are advocating for the Black Hills to be returned to the Lakota people. (AP Photo/Stephen Groves)

Jul. 03, 2020 10:31 PM EDT