For Most Common Heart Surgery, St. Luke’s Has Been Among the Nation’s Worst

Correction, Aug. 3, 2018: An earlier version of this story incorrectly said that a brain scan had revealed that Ernest Barnard suffered a stroke. His family said the scan revealed he had limited brain function.

Correction, Aug. 3, 2018: This article originally identified Dick Lamm as a Republican. He was a Democrat who later ran for president as a member of the Reform Party.

Kris Kobach’s Lucrative Trail of Courtroom Defeats

Correction, Sept. 20, 2018: An earlier version of this article incorrectly stated that Fremont, Nebraska, removed a provision of an immigration law that required employers to verify the immigration status of employees. This provision is in effect.

We Found a New Batch of Trump Administration Appointees

Correction, July 31, 2018: An earlier version of this article misspelled the name of Roger Severino, the director of HHS’ Office for Civil Rights.

About the Immigrant Children Shelter Map

Correction, June 28, 2018: An earlier version of the interactive map incorrectly stated that Northern Virginia Juvenile Detention Center and Shenandoah Valley Juvenile Center were operated by General Dynamics. In fact, the facilities are operated by the Commonwealth of Virginia and the Shenandoah Valley Juvenile Center Commission, respectively.

Correction, June 29, 2018: An earlier version of this article incorrectly stated that the Lutheran Services Carolinas Transitional Foster Care program was located in Salisbury, North Carolina. In fact, the program is located in Columbia, South Carolina.

Correction, July 3, 2018: An earlier version of the interactive map incorrectly stated that a Rising Ground facility in Bronx, New York housed immigrant children. In fact, that facility does not hold immigrant children, and we have removed it. Separately, a previous version of the interactive map incorrectly stated that Cayuga Centers was located at 1767 Park Ave., Harlem, New York. In fact, it is located at 1916 Park Ave., Harlem, New York.

Sobre el mapa de centros de niños inmigrantes

Correction, 28 de junio de 2018: Una versión anterior de este mapa interactivo señalaba de forma incorrecta que Northern Virginia Juvenile Detention Center y Shenandoah Valley Juvenile Center eran operados por General Dynamics. En realidad, estos centros son operados por Commonwealth of Virginia y Shenandoah Valley Juvenile Center Commission respectivamente.

Correction, 29 de junio de 2018: Una versión anterior de este artículo señalaba de forma incorrecta que el Lutheran Services Carolinas Transitional Foster Care program estaba ubicado en Salisbury, Carolina del Norte. De hecho, se encuentra en Columbia, Carolina del Sur.

Correction, 3 de julio de 2018: Una versión anterior de este mapa interactivo señalaba de forma incorrecta que un centro de Rising Ground en Bronx, Nueva York, alojaba a menores inmigrantes. De hecho, esta instalación no aloja a niños inmigrantes y la hemos borrado. Además, una versión previa de este mapa interactivo, señalaba incorrectamente que Cayuga Center estaba ubicado en 1767 Park Ave., Harlem, Nueva York. En realidad está ubicado en 1916 Park Ave., Harlem, Nueva York.

How the Case for Voter Fraud Was Tested — and Utterly Failed

Correction, June 19, 2018: An earlier version of this article incorrectly stated that Stephen Ansolabehere signed a letter criticizing Jesse Richman’s work. In fact, Ansolabehere wrote a peer-reviewed article criticizing Richman’s work. It also misstated the name of the federal courthouse in Kansas City, Kansas.

Escucha a los niños que acaban de ser separados de sus padres en la frontera

Correction, June 18, 2018: This story previously referred to the American Association of Pediatricians. In fact, it’s the American Academy of Pediatrics.

Listen to Children Who’ve Just Been Separated From Their Parents at the Border

Correction, June 18, 2018: This story previously referred to the American Association of Pediatricians. In fact, it’s the American Academy of Pediatrics.

Facebook’s Screening for Political Ads Nabs News Sites Instead of Politicians

Correction, June 15, 2018: An earlier version of this story misspelled the name of a news organization that had an ad rejected as political by Facebook. It’s inewsource, not inewssource.

Correction, June 15, 2018: A prior version of this article identified Ray Shain as a convicted racketeer. He is a convicted felon. His conviction and agreement to make restitution resolved a federal civil racketeering lawsuit.

The Government’s New Contractor to Run Los Alamos Includes the Same Manager It Effectively Fired for Safety Problems

Correction, June 11, 2018: An earlier version of Alison Clarke’s audio story incorrectly stated the amount of time that passed after Debra Clayton’s death before Alison Clarke asked to be put on light duty. It was more than one year, not one month. The audio file above has been updated.

Correction, June 11, 2018: An earlier version of this story incorrectly said that Los Alamos National Laboratory would share the same primary managers as Lawrence Livermore National Laboratory in California. Livermore’s management team includes Bechtel, the University of California, BWX Technologies and AECOM. Texas A&M University and Battelle Memorial Institute also play key roles.

A Pioneering Heart Surgeon’s Secret History of Research Violations, Conflicts of Interest and Poor Outcomes

Correction, July 20, 2018: An earlier version of this article incorrectly said that an abstract describing strokes in patients who received HeartMate II LVADs had been presented at one conference. It was presented at two conferences. It also said that the abstract was not available online; the second abstract was online prior to publication of this article. The article also incorrectly characterized a legal settlement involving St. Luke’s hospital, O.H. “Bud” Frazier and other defendants. The story said the $500,000 settlement did not include the share given to the nurse who brought the suit; the settlement did include the nurse’s share.

Federal Watchdog Launches Investigation of Age Bias at IBM

Correction, May 17, 2018: This article originally misspelled Coretta Roddey’s name.

Connecticut Set to End “Dual Arrests” in Domestic Violence Cases

Correction, May 8, 2018: Due to an editing error an earlier version of this article misspelled the first name of the current governor of Connecticut. It is Dannel, not Daniel.

Oregon Doctors Warned That a Killer and Rapist Would Likely Attack Again. Then the State Released Him.

Correction, Jan. 18, 2019: This story originally misquoted a ruling by the Oregon Supreme Court. In 2005, the court found that “substance dependency” alone was not a basis for the insanity defense. It did not cite “substance-induced psychosis.” (In 2018, a Court of Appeals case further found that “transitory, episodic, drug-induced psychosis” also did not qualify for the defense.) This story was also updated to clarify the timeline of events surrounding Charles Longjaw's return to Oregon in 2015.

Trump’s Company Is Suing Towns Across the Country to Get Breaks on Taxes — “Trump, Inc.” Podcast

Correction, April 11, 2018: This story has been corrected to reflect that lawsuits were filed against the Cook County treasurer's office, not the assessor’s office. It has also been updated to clarify the source of the Sun-Times’ estimation of tax refunds.

Trump’s Labor Department Eviscerates Workplace Safety Panels

Correction, March 29, 2018: An earlier version of this story incorrectly said the Federal Advisory Council on Occupational Safety and Health’s last meeting was on Feb. 18, 2016. It was on Sept. 8, 2016.

Injured Nuclear Workers Finally Had Support. The Trump Administration Has Mothballed It.

Correction, March 13, 2018: An earlier version of this story incorrectly referred to East Tennessee State University as Eastern Tennessee State University.

El sonido y la furia: Dentro del misterio de la embajada de La Habana

Correction, El catorce de marzo: Este reportaje indicó erróneamente la fecha en que el Departamento de Estado ordenó a 24 diplomáticos estadounidenses que salieran de Cuba. Fue el 29 de septiembre, no el 30 de septiembre.

The Sound and the Fury: Inside the Mystery of the Havana Embassy

Correction, Feb. 14, 2018: This article originally misstated the date that the State Department ordered 24 U.S. diplomats to leave Cuba. It was on Sept. 29, not Sept. 30.

Congressman’s Bill Would Force Trump Administration to Fulfill Pledge to Study Racial Disparities in Auto Insurance Pricing

Correction, Feb. 1, 2018: This story originally misstated Rep. Mark Takano’s first name.