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Parliament has issued an ultimatum to Facebook: make Mark Zuckerberg available to testify voluntarily in front of its Digital Culture Media and Sport Committee or face a summons next time he enters British territory, according to a letter Tuesday from committee chairman Damian Collins.

Why it matters: Facebook is facing heat from regulators in Europe who want Zuckerberg to answer questions about data privacy just as he did in the U.S. Facebook isn't commenting for the record, but a company official noted that its chief technology officer, Mike Schroepfer, already testified for five hours last week and said Facebook plans to answer the other questions the committee still has.

Yes, but: Collins' letter said he "failed to answer on nearly 40 separate points."

The back story: Europe has generally been more strict than the U.S. on data and privacy standards. In May, a sweeping privacy law called the General Data Protection Regulation (GDPR) will go into effect for all businesses with that collect data from European citizens. If Facebook doesn't meet those standards, it could get hit with punitive fines.

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Updated 2 hours ago - Politics & Policy

Coronavirus dashboard

Illustration: Aïda Amer/Axios

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Trump says he intends to give RNC speech on White House lawn

President Trump speaking to reporters on South Lawn in July. Photo: Jabin Botsford/The Washington Post via Getty Images

President Trump told the New York Post on Thursday that he plans to deliver his Republican National Convention speech from the White House lawn, despite bipartisan criticism of the optics and legality of the location.

Why it matters: Previous presidents avoided blurring staged campaign-style events — like party conventions — with official business of governing on the White House premises, per Politico.

Fauci's guidance on pre-vaccine coronavirus treatments

Illustration: Aïda Amer/Axios

Antibody drugs and various medicine cocktails against the coronavirus are progressing and may provide some relief before vaccines.

The big picture: Everyone wants to know how and when they can return to "normal" life, as vaccines are not expected to be ready for most Americans for at least a year. Two therapies are known to be helpful, and more could be announced by late September, NIAID Director Anthony Fauci tells Axios.