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Facebook CEO Mark Zuckerberg has seen his company embroiled in scandal over the Russian campaign. Photo: Justin Sullivan / Getty Images

A Facebook tool to show users whether they followed pages placed by Russian operatives in the 2016 election went live on Friday. It covers pages and accounts on the company's main social network and its subsidiary Instagram between between January 2015 and August 2017.

Real talk: Facebook isn't telling users who didn't follow any of the pages whether they were exposed to the divisive content in their newsfeed when, for example, it was shared by a friend during the 2016 election. That's a far broader group than those who connected directly with the accounts.

How it works:

  • To find out if you followed one of the pages or accounts set up as part of the Russian campaign to encourage division during and after the 2016 election, go to this page.
  • You'll have to be logged into Facebook to use the tool, and may also have to log in to your Instagram account if you want to check your follows there, too.
  • You'll either see a message saying you didn't follow any of the pages or a list of the pages you did follow — along with the date you followed them.

Go deeper

Biden confronts mounting humanitarian crisis at the border

Illustration: Eniola Odetunde/Axios. Photo: Pool/Getty Images     

Just over a month into his presidency, President Biden is staring down a mounting crisis at the border that could be just as bad as the ones faced by Barack Obama and Donald Trump, if not worse.

Why it matters: Immigration is an issue that can consume a presidency. It's intensely and poisonously partisan. It's complicated. And the lives and welfare of vulnerable children hang in the balance.

Erica Pandey, author of @Work
2 hours ago - Economy & Business

The rise of vaccine passports

Illustration: Annelise Capossela/Axios

Vaccine passports were touted early in the pandemic as an important piece of the plan to get people back to normal life. Now they’re becoming a reality.

Driving the news: CLEAR, the secure digital identity app that you see in airports around the world, and CommonPass, a health app that lets users securely access vaccination records and COVID test results, have joined forces.

"Vaccine tourism" stretches states' supplies

Illustration: Sarah Grillo/Axios

Americans who are highly motivated to get vaccinated are traveling across state lines after hearing about larger vaccine supplies or loopholes in sign-up systems.

Why it matters: "Vaccine tourism" raises ethical and legal questions, and could worsen the racial socioeconomic and racial inequalities of the pandemic.