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Illustration: Aïda Amer/Axios

Sen. Elizabeth Warren is no fan of private equity or private prisons, and Axios has learned that she wants answers from PE firms invested in prison services companies.

The big picture: Warren's goal is to determine if private equity ownership results in a lower standard of services, similar to an investigation she launched last month into PE-owned for-profit colleges.

Warren yesterday sent letters of inquiry to 5 firms. Co-sponsoring the letters were Reps. Mark Pocan (D-Wis.) and Alexandria Ocasio-Cortez (D-N.Y.).

  • Requested information includes revenue, profits, number of employees and number of incarcerated individuals related to the underlying investments.

None of the 5 targeted firms have a specific focus on prison services, but each has made at least 1 significant investment in the sector:

  • American Securities: GTL, one of the 2 largest providers of inmate calling and emailing services.
  • Apax Partners: Attenti, a provider of electronic monitoring products.
  • BlueMountain Capital: Corizon Health, the largest private provider of medical services to prisons, operating in 220 facilities in 17 states.
  • H.I.G. Capital: Trinity Services Group, a provider of food and commissary services to correctional facilities in 43 states. It also owns health care services provider Wellpath.
  • Platinum Equity: Securus, one of the 2 largest providers of inmate calling and emailing services.

The bottom line: Warren already has proposed legislation that would make private equity funds liable for debt obligations of their portfolio companies, including worker pension obligations. Now, she seems interested in expanding that liability to "consumers" of such portfolio companies, whether they be for-profit students or prisoners.

Go deeper: Axios' deep dive on the business of private prisons

Go deeper

Poll: Women of color highly motivated to vote

Voting rights activists, led by Congressional Black Caucus chair Joyce Beatty (D-Ohio), protest recent passage of voter restriction laws at Hart Senate Office Building on July 15, 2021. Photo: Alex Wong via Getty Images

Women of color turned out to vote at record rates in the 2020 election, with almost nine in 10 agreeing that the stakes were too high not to vote, according to a new poll.

Why it matters: The findings in the poll, conducted by The Harris Poll on behalf of a group of reproductive rights organizations, appear to confirm the highly-motivated voting bloc's emerging power.

Updated 2 hours ago - Sports

Olympics dashboard

Katie Ledecky in Tokyo. Photo: Ding Xu/Xinhua via Getty Images

🚨: Simone Biles won't compete in individual vault or uneven bars

🏊‍♀️: Katie Ledecky wins gold in women's 800m freestyle

🏊: Caeleb Dressel breaks world record in men's 100m butterfly, 3rd gold

🇬🇧: Britain wins gold in first-ever Olympic mixed 4x100m medley relay

💻: Japan tests teleporting games and "remote cheering"

🏳️‍⚧️: Axios at the Olympics: Games grapple with trans athletesTrans athletes see the Tokyo Games as a watershed moment

Go deeper: Full Axios coverage

Updated 3 hours ago - Sports

The Olympic events to watch today

Allyson Felix. Photo: Patrick Smith/Getty Images

5 events to watch today...
  • 🏃‍♀️ 🏃 Track and field: The first-ever mixed 4x400m relay final starts at 8:35 a.m. ET on NBC. Watch the women’s 100m final at 8:50 a.m. ET.
  • 🏐 Women’s beach volleyball: Elimination rounds start at 8 p.m. ET on NBC.
  • 🚲 BMX freestyle finals: Watch USA’s Hannah Roberts go for the gold in the first-ever Olympic women’s freestyle finals at 9:10 p.m. ET on CNBC. Catch the men’s finals at 10:20 p.m. ET.
  • 🏊‍♀️ Swimming finals: Watch Caeleb Dressel go for his fourth gold in the men’s 50m freestyle. Also catch the women’s 50m freestyle, as well as the men’s and women’s the 4x100m medley finals. Coverage starts at 9:30 p.m. ET on NBC.
  • 🏌️ Men’s golf: Round 4 of independent stroke play tees off at 6:30 p.m. ET on the Golf Channel.