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Elon Musk. Photo: Mark Brake/Getty Images

Immigrants helped found more than half of the U.S.'s 87 startup companies valued at more than a billion dollars in 2016, according to a study by the National Foundation for American Policy, with the 11 biggest of those companies employing more than 17,000 people.

Why it matters: The Trump administration recently proposed to cancel an Obama-era visa aimed at helping foreign entrepreneurs start new businesses in the U.S. The president and other advocates for cutting immigration levels argue that immigrants are taking jobs from U.S. workers, but in many instances, immigrants not only contribute to the U.S. economy, but create more jobs for Americans.

The big picture: Of the 44 immigrants who helped found billion dollar startup in the U.S, 20 first came to the U.S. as international students.

Why that matters: There was a 17% drop in international students in the U.S. last year, in large part due to the 28% decline in Indian students receiving visas.

By the numbers:

  • 14 of the entrepreneurs came from India
  • 8 from Canada
  • 8 from the UK
  • 7 from Israel
  • 4 from Germany
  • 3 from China
  • 3 from France
  • 2 from Ireland

What about H1-B?: The Trump administration has also called for increased scrutiny toward certain H-1B work-based visas, which were often acquired by India-based companies who then send high-skilled tech workers to U.S. companies.

  • The State Department will begin to shorten the time Chinese citizens are legally allowed to stay in the U.S. on their visas.

One more stat: Another study from late last year found that 43% of Fortune 500 companies were founded by immigrants or their children.

The 11 biggest companies founded by immigrants:

  1. SpaceX
  2. Mu Sigma
  3. Palantir Technologies
  4. Zenefits
  5. Bloom Energy
  6. WeWork
  7. Apttus
  8. Cloudera
  9. AppNexus
  10. AppDynamics
  11. Uber

Go deeper: The disappearing Chinese student visa

Get more stories like this by signing up for our daily morning newsletter, Axios AM. 

Go deeper

Women rise to the top at major media companies

Illustration: Aïda Amer/Axios

Several women have been tapped to lead some of the country's largest newsrooms over the past year — a promising sign of progress for an industry that's typically been slow to accept change and embrace diversity.

Driving the news: CBS News executive Kimberly Godwin was named president of ABC News on Wednesday. Godwin will be the first Black woman to lead a major broadcast news division when she takes the helm in May.

Americans will likely have to navigate a maze of vaccine "passports"

Illustration: Rae Cook/Axios

Many private businesses and some states are plowing ahead with methods of verifying that people have been vaccinated, despite conservative resistance to "vaccine passports."

Why it matters: Many businesses view some sort of vaccine verification system as key to getting back to normal. But in the absence of federal leadership, a confusing patchwork approach is likely to pop up.

The future of political advertising is connected TV

Reproduced from Centro; Chart: Axios Visuals

Political advertising has quickly begun to migrate over to connected TV (CTV), or digital and streaming television, according to new data.

Why it matters: "If the current trends of explosive growth in CTV viewership continue, we could see a tipping point where CTV makes up nearly half of political digital ad spend as soon as 2022," says Grace Briscoe, vice president of candidates and causes at Centro, a digital ad placement firm that works with hundreds of campaigns across the country.