Together, the two presidents stood side by side at ceremonies commemorating the 75th anniversary of D-Day - but back in the USA, their "friendship tree" didn't make it to its first birthday.
The tree was reportedly never planted and died in quarantine.
The roots of the story go back to April 2018, when the Macron-Trump friendship was being described as a "bromance", and the French president and his wife, Brigitte, were feted at the only state dinner the Trumps have hosted.
The French President offered the young oak to Mr Trump on a state visit to Washington in 2018, and the two shoveled dirt around it under the watchful eyes of their wives and cameras from around the world.
The demise of an commerative oak tree planted by French leader Emmanual Macron and President Trump on White House grounds has been ruled a suicide by an arborist investigating the incident.
After the planting ceremony, Macron tweeted: "100 years ago, American soldiers fought in France, in Belleau to defend our freedom".More news: Google Pixel 4 renders show a camera arrangement that nobody asked for
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The sapling died while in quarantine.
US officials this weekend said it had died prompting a flurry of social media posts comparing its death to the hard relationship the two leaders have had since that visit.
Quarantine is mandatory for any living organism imported to the U.S.
"It was during this visit to Washington that Emmanuel Macron understood that Donald Trump would not budge", Haddad said.