Alex Mierjeski
I’m a research reporter at ProPublica based in New York.
Have a Tip for a Story?
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.
Clarence Thomas and the Billionaire
Island-hopping on a superyacht. Private jet rides around the world. The undisclosed gifts to Thomas have no known precedent in the modern history of the Supreme Court. “It’s incomprehensible to me that someone would do this,” says one former judge.
Multiple Trump Witnesses Have Received Significant Financial Benefits From His Businesses, Campaign
Witnesses in the various criminal cases against the former president have gotten pay raises, new jobs and more. If any benefits were intended to influence testimony, that could be a crime.
The Billionaire Governor Who’s Been Sued Dozens of Times for Millions in Unpaid Bills
Gov. Jim Justice is West Virginia’s richest man. Over the last three decades, lawsuits over unpaid bills have cost his constellation of companies more than $128 million in judgments and settlements.
Local Reporting Network
Secretive D.C. Influence Project Appears to Be Running a Group House for Right-Wing Lawmakers
Evangelical pastor Steve Berger’s political influence campaign operates out of his D.C. townhouse. In addition to House Speaker Mike Johnson living there, a prominent Trump ally, Rep. Andy Ogles, has the keys.
Speaker Mike Johnson Is Living in a D.C. House That Is the Center of a Pastor’s Secretive Influence Campaign
The Capitol Hill townhouse is owned by a major Republican donor. It’s the headquarters of a little-known political influence project that has reached a number of powerful Republican politicians.
Trump Official Destroying USAID Secretly Met With Christian Nationalists Abroad in Defiance of U.S. Policy
Now one of the most powerful people in the U.S. government, Peter Marocco’s turbulent tenure during the first Trump administration sheds light on his current efforts to dismantle the American foreign aid system from the inside out.
Elon Musk’s DOGE Is Expected to Examine Another Treasury System Next Week
The new target, sources said, is a sensitive database that tracks the flow of money across the government.
Elon Musk’s Demolition Crew
Elon Musk, the world’s richest man, has been unleashed on federal agencies. ProPublica is attempting to document who is working with him and what they are doing.
Memory-Holing Jan. 6: What Happens When You Try to Make History Vanish?
The Trump administration’s decision to delete a DOJ database of cases against Capitol riot defendants places those who seek to preserve the historical record in direct opposition to their own government.
Billy Long, Trump’s Nominee to Lead the IRS, Touts a Credential That Tax Experts Say Is Dubious
The former representative from Missouri, who once pushed to abolish the IRS, has marketed himself as a certified tax and business advisor after attending only a three-day seminar.
Donald Trump Controls a Publicly Traded Company. Now He Will Pick Its Regulator.
There have been internal concerns that Trump Media could be misleading investors, a source said. But with its largest shareholder about to be president, experts doubt the SEC is up to the job of investigating Truth Social’s parent company.
Trump Media Outsourced Jobs to Mexico Even as Trump Pushes “America First”
On the campaign trail, Donald Trump threatened businesses that send jobs south of the border, while his own company that runs the Truth Social platform outsourced coding jobs to workers in Mexico, outraging some staff members.
Trump Media Whistleblower Blasts Company for Outsourcing Jobs Abroad as Betrayal of “America First”
An internal Truth Social complaint reviewed by ProPublica calls for the firing of CEO Devin Nunes, alleging he has pursued an “America Last” hiring policy, “consistently lied” and made the company vulnerable to action by regulators.