Protesters gather in Westminster. Photo: TF-Images/Getty Images

President Trump is making his first visit to the U.K. as president, meeting with Prime Minister Theresa May at her country estate and having tea with the Queen at Windsor Castle.

The flip side: Trump is extremely unpopular in the U.K., and his visit has whipped up tremendous controversy. He's largely avoiding London while in the U.K., but the mass demonstrations there have loomed over the visit.

Protesters gather in London's Trafalgar Square. Photo: Joe Giddens/PA Images via Getty Images
Protests in London. Photo: Tolga Akmen/AFP/Getty Images
Protesters march through London. Photo: Yui Mok/PA Images via Getty Images
Photo: Joe Giddens/PA Images via Getty Images
A Trump-as-baby balloon flies in Westminster. Photo: TF-Images/Getty Images

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Biden and Trump point fingers over "buy American" proposals

Joe Biden at a campaign event in Wilmington, DE. Photo: Alex Wong/Getty Images

President Trump and Joe Biden are going back and forth over the former vice president's "buy American" economic proposal, which Trump claims Biden "plagiarized" from him.

Why it matters: Biden is directly challenging Trump and his "America First" agenda with the release of his latest plan, focused on economic recovery and re-investing in American manufacturing in the wake of the coronavirus pandemic.

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Amazon tells workers to delete TikTok from devices they use for work

Illustration: Aïda Amer/Axios

Amazon, citing security risks, told its employees Friday to uninstall social video app TikTok from any mobile devices they use to access their work email.

Why it matters: The move comes amid a broader backlash against TikTok, in part due to questions around possible ties to Beijing. TikTok is owned by Chinese tech firm ByteDance.

Delta CEO: Trump administration should issue mask mandate for air travel

Photo: Al Seib/Los Angeles Times via Getty Images

Delta CEO Ed Bastian on Friday told CNN that he believes the Trump administration should move to require the use of face masks during air travel amid a surge in coronavirus cases.

The big picture: Delta already requires passengers to wear masks during its flights, but Bastian says it can be difficult to enforce that directive if passengers refuse — and he's not sure if other airlines would be on board.