People gather around the "Baby Trump" balloon during Independence Day celebrations in Washington, D.C., U.S., July 4, 2019.

Miki Sudo celebrates after winning the Nathan's Famous Fourth of July International Hot Dog-Eating Contest at Coney Island in Brooklyn, New York City, U.S., July 4, 2019.

Joey Chestnut reacts after wining the Nathan's Famous Fourth of July International Hot Dog-Eating Contest at Coney Island in Brooklyn, New York, U.S., July 4, 2019.

The U.S. Marine Corps Silent Drill Platoon takes part in Independence Day celebrations at the Lincoln Memorial in Washington, D.C., U.S., July 4, 2019.

A man on a motorized toilet drives past spectators during a Fourth of July Parade in Norwalk, Iowa, U.S., July 4, 2019.

A line of Corvettes pass in the Fourth of July Parade in Norwalk, Iowa, U.S., July 4, 2019.

Aiden Butler and Micah Luethje shop for fireworks at a roadside stand in Indianola, Iowa, U.S., July 4, 2019.

Participants dressed in historical uniforms attend Independence Day celebrations in Washington, D.C., U.S., July 4, 2019.

U.S. Navy Blue Angels perform a flypast at the "Salute to America" event during Fourth of July Independence Day celebrations at the Lincoln Memorial in Washington, D.C., U.S., July 4, 2019.

A detail shot of the patriotic shocks and shoes worn by Detroit Tigers designated hitter Miguel Cabrera (24) as he runs to third base on his way to score against the Chicago White Sox on a ground rule double hit by left fielder Christin Stewart (not pictured) at Guaranteed Rate Field. Mandatory Credit: Jon Durr-USA TODAY Sports TPX IMAGES OF THE DAY

A crowd watches Independence Day celebrations in Washington, D.C., U.S., July 4, 2019.

People gather at Lincoln Memorial Reflecting Pool during Fourth of July Independence Day celebrations in Washington, D.C., U.S., July 4, 2019.

U.S. President Donald Trump and first lady Melania Trump arrive for the "Salute to America" event during Fourth of July Independence Day celebrations at the Lincoln Memorial in Washington, D.C., U.S., July 4, 2019.

A U.S. Air Force flypast of a B-2 stealth bomber and F-22 Raptor fighters is seen during President Donald Trump’s “Salute to America” Fourth of July Independence Day celebration in Washington, U.S., July 4, 2019.

People hold banners in support of U.S. President Donald Trump during Fourth of July Independence Day celebrations in Washington, D.C., U.S., July 4, 2019.

ID Miss Maryland, Mariela Pepin, wearing her sash and tiara, rides in an open-top vehicle during Fourth of July Independence Day celebrations in Washington, D.C., U.S., July 4, 2019.

Men dance next to the Sikhs of America float during Fourth of July Independence Day celebrations in Washington, D.C., U.S., July 4, 2019.

Fireworks are seen over the Lincoln Memorial during Fourth of July Independence Day celebrations in Washington, D.C., U.S., July 4, 2019.

Miki Sudo competes in Nathan's Famous Fourth of July International Hot Dog-Eating Contest at Coney Island in Brooklyn, New York City, U.S., July 4, 2019.

93-year-old Mabel Wittenmeyer waves a U.S. flag as she rides in a car during the annual 4th of July parade in Barnstable Village on Cape Cod, Massachusetts, U.S., July 4, 2019.

Women hold parasols as they take part in the Independence Day celebrations in Washington, D.C., U.S., July 4, 2019.

A man and a girl ride in an antique Ford automobile during the annual Fourth of July parade in Barnstable Village on Cape Cod, Massachusetts, U.S., July 4, 2019.

A statue depicting U.S. President Donald Trump is unveiled near the Washington Monument during Fourth of July Independence Day celebrations in Washington, D.C., U.S., July 4, 2019.

Women in roller derby outfits skate by with national flags during Fourth of July Independence Day celebrations in Washington, D.C., U.S., July 4, 2019.

A girl carries a U.S. flag as she takes part in a parade during Fourth of July Independence Day celebrations in Washington, D.C., U.S., July 4, 2019.

A large balloon of Uncle Sam is seen on Constitution Ave during National Independence Day Parade in Washington, U.S., July 4, 2019.

The Berry family members, Isabel, Don, Cecil and Roger watch as a Fourth of July parade passes in Norwalk, Iowa, U.S., July 4, 2019.

Demonstrators burn a U.S. flag in front of the White House during a Fourth of July Independence Day protest in Washington, D.C., U.S., July 4, 2019.

Blake Berry, 7, and Kyson Harvey, 5, play on a Slip-n-slide in Norwalk, Iowa, U.S., July 4, 2019.

Hadley Bellcock, 4, and Paisley McLaughlin, 4, watch marchers during the Fourth of July Parade in Norwalk, Iowa, U.S., July 4, 2019.

Fireworks illuminate the sky over the Lincoln Memorial during celebrations of the United States' Fourth of July Independence Day in Washington, D.C., U.S., July 4, 2019.

NASA astronauts Christina Koch and Nick Hague are shown on the International Space Station sending a Fourth of July message home from space in this photo taken July 4, 2019. NASA/Handout via REUTERS

People watch the Macy's 4th of July Firework Show over the Brooklyn Bridge in New York, U.S., July 4, 2019.