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First lady Melania Trump, President Donald Trump, French President Emmanuel Macron and his wife first lady Brigitte Macron arrive at Mount Vernon. Photo: Saul Loeb/AFP via Getty Images

French President Emmanuel Macron and his wife Brigitte landed at Joint Base Andrews Monday afternoon, then roamed around D.C. before meeting President Trump and First Lady Melania at the White House that evening.

The details: President Trump and Macron planted a tree on the White House South Lawn before traveling to Mount Vernon, Virginia where they toured George Washington's estate and dined on Dover sole and lemon ricotta agnolotti.

Macron and his wife Brigitte receive a welcome ceremony upon their arrival in the U.S.

French President Emmanuel Macron and his wife at Andrews Air Force Base. Photo: Win McNamee/Getty Images

They later pose for photos outside of the Lincoln Memorial after touring the National Mall.

French President Emmanuel Macron and his wife Brigitte Macron walk near the Lincoln Memorial after their arrival in Washington, DC. Photo: Eric Baradat/AFP via Getty Images

They also strode down 17th Street.

Trump and Macron plant a tree on the grounds of the White House.

Photo: Jim Watson/AFP via Getty Images

Macron and his wife are staying overnight in the Blair House, located across from the White House, during their time in D.C.

The Blair House. Photo: Alayna Treene/Axios

Go deeper

USAID chief tests positive for coronavirus

An Air Force cargo jet delivers USAID supplies to Russia earlier this year. Photo: Mikhail Metzel/TASS via Getty Images

The acting administrator of the United States Agency for International Development informed senior staff Wednesday he has tested positive for coronavirus, two sources familiar with the call tell Axios.

Why it matters: John Barsa, who staffers say rarely wears a mask in their office, is the latest in a series of senior administration officials to contract the virus. His positive diagnosis comes amid broader turmoil at the agency following the election.

Bryan Walsh, author of Future
5 hours ago - Health

COVID-19 shows a bright future for vaccines

Illustration: Annelise Capossela/Axios

Promising results from COVID-19 vaccine trials offer hope not just that the pandemic could be ended sooner than expected, but that medicine itself may have a powerful new weapon.

Why it matters: Vaccines are, in the words of one expert, "the single most life-saving innovation ever," but progress had slowed in recent years. New gene-based technology that sped the arrival of the COVID vaccine will boost the overall field, and could even extend to mass killers like cancer.

7 hours ago - Health

Beware a Thanksgiving mirage

Illustration: Sarah Grillo/Axios

Don't be surprised if COVID metrics plunge over the next few days, only to spike next week.

Why it matters: The COVID Tracking Project warns of a "double-weekend pattern" on Thanksgiving — where the usual weekend backlog of data is tacked on to a holiday.