Photo: Zach Gibson/Getty Images

Former Ukraine envoy Kurt Volker resigned from his position as executive director of the McCain Institute amid scrutiny over his role in President Trump's ongoing controversy of his dealings with Ukraine's government.

The big picture: CNN's Jake Tapper reported that the McCain Institute stood by Volker until his release of text messages to a group of House committees showed that he was much more involved with the Ukraine matter than he had told people.

  • In a statement, Volker wrote that the Ukraine controversy "risks becoming a distraction from the accomplishments and continued growth of the Institute," where he has worked since 2012.
  • Nick Rasmussen, who oversees the institute's national security and counterterrorism programs, will take over as acting director.
  • The organization aims to advance "character-driven leadership based on security, economic opportunity, freedom and human dignity" around the world.

Context: Volker resigned from his envoy position last month before he testified to committees overseeing the Trump impeachment inquiry that he had no knowledge of the administration's efforts to get Ukraine to investigate the Bidens.

Go deeper: Ron Johnson says Sondland told him of possible Ukraine quid pro quo

Go deeper

Big Tech marshals a right-leaning army of allies for antitrust fight

Illustration: Eniola Odetunde/Axios

As tech's giants prepare to face off with antitrust enforcers this summer, they will draw support from an array of predominantly right-leaning defenders ranging from influential former government officials to well-connected think tanks.

The big picture: The Justice Department, the Federal Trade Commission and the states have multiple investigations of monopolistic behavior underway targeting Facebook and Google, with other giants like Amazon and Apple also facing rising scrutiny. Many observers expect a lawsuit against Google to land this summer.

John Roberts' long game

Illustration: Sarah Grillo/Axios

Supreme Court Chief Justice John Roberts is not the revolutionary that conservative activists want him to be.

He moves slower than they want, sides with liberals more than they want, and trims his sails in ways they find maddening. But he is still deeply and unmistakably conservative, pulling the law to the right — at his own pace and in his own image.

1 hour ago - Health

The U.S.' new default coronavirus strategy: herd immunity

Illustration: Aïda Amer/Axios

By letting the coronavirus surge through the population with only minimal social distancing measures in place, the U.S. has accidentally become the world’s largest experiment in herd immunity.

Why it matters: Letting the virus spread while minimizing human loss is doable, in theory. But it requires very strict protections for vulnerable people, almost none of which the U.S. has established.