Alex Mierjeski
I’m a research reporter at ProPublica based in New York.
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What I Cover
I cover a wide range of stories as a part of ProPublica’s national team. Most recently, I’ve contributed to investigations of the Supreme Court and the federal judiciary, as well as President Donald Trump’s business dealings.
My Background
I’ve worked with both local and national teams at ProPublica, where I’ve been a research reporter since 2020.
My work alongside colleagues in the newsroom has spurred change, driven news cycles and won awards. In 2024, my colleagues and I received the Pulitzer Prize for public service for our work revealing ties between Supreme Court justices and billionaire benefactors. Our stories helped lead to the court establishing a code of conduct — a first in its history. Our work also won a George Polk Award, the Selden Ring Award and an Investigative Reporters and Editors medal.
Prior to ProPublica I was a post-graduate reporting fellow at the Columbia University Graduate School of Journalism.
How We Tallied Alaska Villages Without Local Law Enforcement
We asked more than 500 organizations representing 195 communities if they employ a police officer of any kind. Of that number, 70 communities reported having no police at some point in 2019.
Local Reporting Network
Oregon Board Says Those Found Criminally Insane Rarely Commit New Crimes. The Numbers Say Otherwise.
The Psychiatric Security Review Board questioned how many people it discharged from state custody returned to crime. But it did not share its findings or change policies even as former clients killed or raped.
Local Reporting Network
Oregon Board Says Those Found Criminally Insane Rarely Commit New Crimes. The Numbers Say Otherwise.
The Psychiatric Security Review Board questioned how many people it discharged from state custody returned to crime. But it did not share its findings or change policies even as former clients killed or raped.
Local Reporting Network
The Immigrant Children’s Shelters Near You
We found 100 facilities holding immigrant children and have mapped 88 of them. Help us find out more about the facilities and the children being held there.
Estos son los centros con niños inmigrantes que están cerca de ti
Hemos encontrado 100 instalaciones donde están los menores inmigrantes y hemos mapeado 79 de ellas. Ayúdanos a descubrir más sobre los centros y albergues y sobre los niños que están en ellos.
We’ve Found $16.1 Million in Political and Taxpayer Spending at Trump Properties
Most came from political entities such as the Trump campaign, but government agencies chipped in, too. “I could offer clarity,” one federal employee explained, “but I choose not to.”
A Guide for Digging Through Trump’s Financial Disclosures
Here’s how we searched through President Donald Trump’s financial disclosures, and how you can, too.
Trump’s Appointees Pledged Not to Lobby After They Leave. Now They’re Lobbying.
Despite agreeing to five-year bans, at least six former administration officials are registered lobbyists and others are doing similar work without registering.