An abandoned ride share bicycle appears submerged underwater at the Tidal Basin near the National Mall in Washington, U.S., March 29, 2021. Picture taken March 29, 2021. REUTERS/Tom Brenner

An abandoned ride share bicycle appears submerged underwater at the Tidal Basin near the National Mall in Washington, U.S., March 29, 2021. Picture taken March 29, 2021. REUTERS/Tom Brenner TPX IMAGES OF THE DAY

Kim Graf points to a flowerbed behind a bed of Tulip flowers while observing the annual cherry blossoms at the Tidal Basin near the National Mall in Washington, U.S., March 29, 2021. Picture taken March 29, 2021. REUTERS/Tom Brenner

Margarita Pineda throws flower petals over Amancio Pineda while taking a selfie at the Tidal Basin near the National Mall in Washington, U.S., March 31, 2021. REUTERS/Tom Brenner

The U.S. Capitol Building is seen through a pair of cherry trees at the Tidal Basin near the National Mall in Washington, U.S., March 31, 2021. REUTERS/Tom Brenner

Pedestrians walk along cherry trees at the Tidal Basin near the National Mall in Washington, U.S., March 31, 2021. REUTERS/Tom Brenner

Margarita Pineda throws flower petals over Amancio Pineda while taking a selfie at the Tidal Basin near the National Mall in Washington, U.S., March 31, 2021. REUTERS/Tom Brenner

Flower petals from cherry trees rest over muddy footprints from passing visitors at the Tidal Basin near the National Mall in Washington, U.S., March 31, 2021. REUTERS/Tom Brenner

Flower petals from cherry trees rest over muddy footprints from passing visitors at the Tidal Basin near the National Mall in Washington, U.S., March 31, 2021. REUTERS/Tom Brenner

Margarita Pineda throws flower petals over Amancio Pineda while taking a selfie at the Tidal Basin near the National Mall in Washington, U.S., March 31, 2021. REUTERS/Tom Brenner

Priyanka Kaswan poses for a photo while sitting on a cherry tree at the Tidal Basin near the National Mall in Washington, U.S., March 31, 2021. REUTERS/Tom Brenner TPX IMAGES OF THE DAY

Priyanka Kaswan poses for a photo while sitting on a cherry tree at the Tidal Basin near the National Mall in Washington, U.S., March 31, 2021. REUTERS/Tom Brenner

Jomer Gutierrez takes a selfie beside his dog, Mimi, beside cherry blossoms near the National Mall in Washington, U.S., March 31, 2021. REUTERS/Tom Brenner

Priyanka Kaswan poses for a photo while sitting on a cherry tree at the Tidal Basin near the National Mall in Washington, U.S., March 31, 2021. REUTERS/Tom Brenner

A visitor takes a cell phone photo of a distinguished cherry tree at the Tidal Basin near the National Mall in Washington, U.S., March 31, 2021. REUTERS/Tom Brenner

Jomer Gutierrez takes a selfie beside his dog, Mimi, beside cherry blossoms near the National Mall in Washington, U.S., March 31, 2021. REUTERS/Tom Brenner

Visitors walk along the Tidal Basin to observe the annual cherry blossom near the National Mall in Washington, U.S., March 31, 2021. REUTERS/Tom Brenner

Sophia Mae takes a selfie along the Tidal Basin near the National Mall in Washington, U.S., March 31, 2021. REUTERS/Tom Brenner

People take a photo next to a blooming tree during cherry blossom season in Yuyuantan Park in Beijing, China, March 31, 2021. REUTERS/Thomas Peter TPX IMAGES OF THE DAY

People ride a boat in Yuyuantan Park during cherry blossom season, in Beijing, China, March 31, 2021. REUTERS/Thomas Peter

A woman takes a photo amid blooming trees during cherry blossom season in Yuyuantan Park in Beijing, China, March 31, 2021. REUTERS/Thomas Peter

People take photos next to a blooming tree during cherry blossom season in Yuyuantan Park in Beijing, China, March 31, 2021. REUTERS/Thomas Peter

Women take photos during cherry blossom season in Yuyuantan Park in Beijing, China, March 31, 2021. REUTERS/Thomas Peter

Women take photos amid blooming trees during cherry blossom season in Yuyuantan Park in Beijing, China, March 31, 2021. REUTERS/Thomas Peter

Women take photos next to a blooming tree during cherry blossom season in Yuyuantan Park in Beijing, China, March 31, 2021. REUTERS/Thomas Peter

Boys play next to a blooming cherry tree at a park in Tokyo, Japan, March 31, 2021. REUTERS/Kim Kyung-Hoon TPX IMAGES OF THE DAY

A woman stands amid blooming trees during cherry blossom season in Yuyuantan Park in Beijing, China, March 31, 2021. REUTERS/Thomas Peter TPX IMAGES OF THE DAY

Kites and a football flies in the air near the U.S. Capitol as visitors gather to observe the annual cherry blossoms along the National Mall in Washington, U.S., March 29, 2021. REUTERS/Tom Brenner

A visitor walks along the Tidal Basin while observing the annual cherry blossoms near the National Mall in Washington, U.S., March 29, 2021. REUTERS/Tom Brenner

Visitors walk along the Tidal Basin while observing the annual cherry blossoms near the National Mall in Washington, U.S., March 29, 2021. REUTERS/Tom Brenner

Moses Choy takes a picture of a distinguished cherry tree at the Tidal Basin near the National Mall in Washington, U.S., March 29, 2021. REUTERS/Tom Brenner

A visitor takes a picture of a distinguished cherry tree at the Tidal Basin near the National Mall in Washington, U.S., March 29, 2021. REUTERS/Tom Brenner

A tree is illuminated by a camera flash as visitors observe the annual cherry blossoms at the Tidal Basin near the National Mall in Washington, U.S., March 29, 2021. REUTERS/Tom Brenner

A tree is illuminated by a camera flash as visitors observe the annual cherry blossoms at the Tidal Basin near the National Mall in Washington, U.S., March 29, 2021. REUTERS/Tom Brenner

Visitors sit along a tidal wall while observing the annual cherry blossoms at the Tidal Basin near the National Mall in Washington, U.S., March 29, 2021. REUTERS/Tom Brenner

A discarded protective face mask lays on the grass as visitors observe the annual cherry blossoms at the Tidal Basin near the National Mall in Washington, U.S., March 29, 2021. REUTERS/Tom Brenner

Visitors take photos near the annual cherry blossoms at the Tidal Basin along the National Mall in Washington, U.S., March 29, 2021. REUTERS/Tom Brenner

Kim Graf points to a flowerbed behind a bed of Tulip flowers while observing the annual cherry blossoms at the Tidal Basin near the National Mall in Washington, U.S., March 29, 2021. REUTERS/Tom Brenner

Visitors stand behind Tulip flowers while observing the annual cherry blossoms at the Tidal Basin near the National Mall in Washington, U.S., March 29, 2021. REUTERS/Tom Brenner TPX IMAGES OF THE DAY

People observe the annual cherry blossoms in Washington, U.S., March 29, 2021. REUTERS/Leah Millis

People observe the annual cherry blossoms in Washington, U.S., March 29, 2021. REUTERS/Leah Millis

Ashley Buchanan poses for photographs amongst the annual cherry blossoms in Washington, U.S., March 29, 2021. REUTERS/Leah Millis

People observe the annual cherry blossoms in Washington, U.S., March 29, 2021. REUTERS/Leah Millis

A person runs through the annual cherry blossoms in Washington, U.S., March 29, 2021. REUTERS/Leah Millis

The Washington Monument is seen through the annual cherry blossoms in Washington, U.S., March 29, 2021. REUTERS/Leah Millis

The annual cherry blossoms glow in the morning light in Washington, U.S., March 29, 2021. REUTERS/Leah Millis

People observe the annual cherry blossoms in Washington, U.S., March 29, 2021. REUTERS/Leah Millis

People observe the annual cherry blossoms in Washington, U.S., March 29, 2021. REUTERS/Leah Millis

Allie Provost poses for photographs amongst the annual cherry blossoms in Washington, U.S., March 29, 2021. REUTERS/Leah Millis

People observe the annual cherry blossoms in Washington, U.S., March 29, 2021. REUTERS/Leah Millis

The Martin Luther King, Jr. memorial is seen surrounded by the annual cherry blossoms in Washington, U.S., March 29, 2021. REUTERS/Leah Millis

A couple kisses for a camera as people observe the annual cherry blossoms in Washington, U.S., March 29, 2021. REUTERS/Leah Millis

Blooming cherry blossoms are seen during full moon at the Tidal Basin in Washington, U.S., March 28, 2021. REUTERS/Carlos Barria

Blooming cherry blossoms near the Washington Monument, in Washington, U.S., March 28, 2021. REUTERS/Carlos Barria

Blooming cherry blossoms are seen during full moon at the Tidal Basin in Washington, U.S., March 28, 2021. REUTERS/Carlos Barria

The Martin Luther King, Jr. Memorial is surrounded by blooming cherry blossoms at the Tidal Basin in Washington, U.S., March 28, 2021. REUTERS/Carlos Barria

Local residents stand near quotes from Martin Luther King, Jr. at his memorial, while surrounded by blooming cherry blossoms, in Washington, U.S. March 28, 2021. REUTERS/Carlos Barria

The Martin Luther King, Jr. Memorial is surrounded by blooming cherry blossoms at the Tidal Basin in Washington, U.S., March 28, 2021. REUTERS/Carlos Barria

A woman walks with her bicycle under blooming cherry blossom trees by the Tidal Basin in Washington, U.S. March 27, 2021. REUTERS/Cheriss May

A woman stands with a child as she jumps to touch the blooming cherry blossoms by the Tidal Basin in Washington, U.S. March 27, 2021. REUTERS/Cheriss May