South Dakota's U.S. Independence Day Mount Rushmore fireworks celebrations seen at Mt. Rushmore in Keystone, South Dakota, U.S., July 3, 2020.

U.S. President Donald Trump looks at U.S. Navy Blue Angels aerial flypast as he and first lady Melania Trump attend South Dakota's U.S. Independence Day Mount Rushmore fireworks celebrations at Mt. Rushmore in Keystone, South Dakota, U.S., July 3, 2020.

Attendees wait for U.S. President Donald Trump to speak at South Dakota's U.S. Independence Day Mount Rushmore fireworks celebrations at Mt. Rushmore in Keystone, South Dakota, U.S., July 3, 2020.

U.S. President Trump and first lady Melania Trump attend South Dakota's U.S. Independence Day Mount Rushmore fireworks celebrations at Mt. Rushmore in South Dakota, U.S., July 3, 2020.

Attendees look on as U.S. President Donald Trump speaks at South Dakota's U.S. Independence Day Mount Rushmore fireworks celebrations at Mt. Rushmore in Keystone, South Dakota, U.S., July 3, 2020.

South Dakota's U.S. Independence Day Mount Rushmore fireworks celebrations seen at Mt. Rushmore in Keystone, South Dakota, U.S., July 3, 2020.

Marine One with U.S. President Donald Trump and first lady Melania Trump flies next to Mt. Rushmore, in Keystone, South Dakota, U.S., July 3, 2020.

U.S. President Donald Trump gestures as he attends South Dakota's U.S. Independence Day Mount Rushmore fireworks celebrations at Mt. Rushmore in Keystone, South Dakota, U.S., July 3, 2020.

U.S. President Donald Trump looks at U.S. Navy Blue Angels aerial flypast as he and first lady Melania Trump attend South Dakota's U.S. Independence Day Mount Rushmore fireworks celebrations at Mt. Rushmore in Keystone, South Dakota, U.S., July 3, 2020.

South Dakota's U.S. Independence Day Mount Rushmore fireworks are launched during celebrations at Mt. Rushmore in Keystone, South Dakota, U.S., July 3, 2020.

U.S. President Trump and first lady Melania Trump attend South Dakota's U.S. Independence Day Mount Rushmore fireworks celebrations at Mt. Rushmore in South Dakota, U.S., July 3, 2020.

U.S. President Donald Trump looks at fireworks as he attends South Dakota's U.S. Independence Day Mount Rushmore fireworks celebrations at Mt. Rushmore in Keystone, South Dakota, U.S., July 3, 2020.

U.S. President Donald Trump attends South Dakota's U.S. Independence Day Mount Rushmore fireworks celebrations at Mt. Rushmore in Keystone, South Dakota, U.S., July 3, 2020.

U.S. President Donald Trump attends South Dakota's U.S. Independence Day Mount Rushmore fireworks celebrations at Mt. Rushmore in Keystone, South Dakota, U.S., July 3, 2020.

Tiffany Trump, her boyfriend Michael Boulos, Eric Trump and his wife Lara Trump, are seen as U.S. President Trump and first lady Melania Trump attend South Dakota's U.S. Independence Day Mount Rushmore fireworks celebrations at Mt. Rushmore in South Dakota, U.S., July 3, 2020.

An aerial flypast takes place over Mt. Rushmore during South Dakota's U.S. Independence Day Mount Rushmore fireworks celebrations in Keystone, South Dakota, U.S., July 3, 2020.