Photo: ALASTAIR PIKE/AFP via Getty Images

Even if it proves to be the right thing to do, implementing a ban on political ads is no easy task, as the major platforms have found out in Washington state. As The Verge reports, Facebook and Google opted to ban ads there rather than comply with the state's strict campaign finance laws, but have found even that to be difficult.

Why it matters: The experiences of Facebook and Google in Washington state could foreshadow the work Twitter will have to implement its promised ban on political advertising, which starts next month.

For example, one Seattle City Council candidate managed to run some ads on Facebook, while her rival was blocked entirely.

Meanwhile: One of Facebook's fact-checking partners has proposed a potential solution for the company's dilemma. As CNN reports, Lead Stories plans to propose to Facebook next week a set-up in which politicians submit their ads for fact-checking and those fact-checks would be subject to review by a blue-ribbon, nonpartisan panel.

Go deeper: Twitter casts itself as the anti-Facebook

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Harris previews dual role in debut speech: Attacking Trump and humanizing Biden

Sen. Kamala Harris began her first speech as Joe Biden's running mate excoriating President Trump for his "mismanagement" of the coronavirus and scorn for the racial justice movement, before quickly pivoting to how she came to know Biden: through her friendship with his late son Beau.

Why it matters: The debut speech on Wednesday underscored the dual roles that Harris will take on for the rest of the campaign — humanizing Biden during a moment of national crisis and "prosecuting" the case against Trump as a failed president.

26 mins ago - Health

The two sides of America's coronavirus response

Illustration: Eniola Odetunde/Axios

America's bungled political and social response to the coronavirus exists side-by-side with a record-breaking push to create a vaccine with U.S. companies and scientists at the center.

Why it matters: America's two-sided response serves as an X-ray of the country itself — still capable of world-beating feats at the high end, but increasingly struggling with what should be the simple business of governing itself.

Joe Biden introduces Kamala Harris in first joint appearance

Joe Biden formally introduced Sen. Kamala Harris as his running mate on Wednesday, telling a socially distanced audience in a Wilmington, Del., gymnasium: "I have no doubt that I picked the right person to join me as the next vice president of the United States of America."

Why it matters: Harris is a historic pick for vice president, becoming the first Black woman and first South Asian woman to be named to a major-party U.S. presidential ticket. "Kamala knows how to govern," Biden said. "She knows how to make the hard calls. She is ready to do this job on day one."