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Newly released records reveal the American Israel Public Affairs Committee, or AIPAC, was the primary funding organization behind two ostensibly independent super PACs that spent heavily to reshape Chicago-area Democratic congressional primaries — a connection the groups did not disclose during the campaign.

The records also show the groups received significant sums from individual megadonors, including Michael Sacks, who led the local host committee for the 2024 Democratic National Convention.

United Democracy Project, AIPAC’s affiliated super PAC, directed more than $5.3 million to bankroll the groups Elect Chicago Women and Affordable Chicago Now, according to Federal Election Commission filings released Friday night.

The two super PACs, along with UDP itself, emerged as the largest outside spenders in Chicago’s four competitive congressional primaries, part of a surge that reached an unprecedented $32.9 million in outside spending. But who was behind and funded the groups remained shrouded until after the March 17 primary election, a tactic that sparked controversy as opponents decried hidden influence.

Read the full story from the Tribune’s Jake Sheridan and Olivia Olander.

Here are the top stories you need to know to start your day, including: what to know about a deadly collision at New York’s LaGuardia Airport, a push to protect Morgan Shoal and the Chicago shoreline and what’s next for the Illinois men as they advance to the Sweet 16.

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People follow a truck carrying the flag draped coffins of Gen. Ali Mohammad Naeini, a spokesperson for Iran's paramilitary Revolutionary Guard and one of his comrades Amir Hossein Bidi , during their funeral procession in Tehran, Iran, Saturday, March 21, 2026. (AP Photo/Vahid Salemi)
People follow a truck carrying the flag draped coffins of Gen. Ali Mohammad Naeini, a spokesperson for Iran’s paramilitary Revolutionary Guard and one of his comrades Amir Hossein Bidi, during their funeral procession in Tehran, Iran, March 21, 2026. (AP Photo/Vahid Salemi)

US will hold off on power plant strikes for 5 days, extending Trump deadline on Strait of Hormuz

President Donald Trump has extended his deadline for Iran to reopen the Strait of Hormuz, saying the U.S. will hold off on power plant strikes for five days.

Trump made the announcement on his Truth Social site today, hours ahead of a deadline later in the day.

An Air Canada Jet sits on the runway at LaGuardia Airport, Monday, March 23, 2026, after colliding with a Port Authority aircraft rescue and firefighting vehicle after landing in New York. (AP Photo/Ryan Murphy)
An Air Canada Jet sits on the runway at LaGuardia Airport, March 23, 2026, after colliding with a Port Authority aircraft rescue and firefighting vehicle after landing in New York. (AP Photo/Ryan Murphy)

Pilot and copilot killed in collision between jet and fire truck at New York’s LaGuardia Airport

Two people were killed and several others badly hurt when an Air Canada regional jet struck a fire truck on a runway while landing at New York’s LaGuardia Airport, officials said.

The pilot and copilot were killed in the collision late last night, which crushed the nose of the aircraft, while around 40 passengers and crew members were taken to area hospitals, some with serious injuries. Most have since been released from treatment, authorities said today.

Flowers are seen on the pier at Tobey Prinz Beach in Chicago's Rogers Park as people fish on March 21, 2026. Loyola University freshman Sheridan Gorman was fatally shot there Thursday. Chicago police have arrested a 25-year-old Rogers Park man in connection with the shooting. (Chris Sweda/Chicago Tribune)
Flowers are seen on the pier at Tobey Prinz Beach in Chicago’s Rogers Park as people fish on March 21, 2026. Loyola University freshman Sheridan Gorman was fatally shot there Thursday. Chicago police have arrested a 25-year-old Rogers Park man in connection with the shooting. (Chris Sweda/Chicago Tribune)

Man charged in Loyola student’s shooting as ICE lodges arrest detainer

The Department of Homeland Security said yesterday that U.S. Immigration and Customs Enforcement had lodged an arrest detainer asking Illinois officials not to release a suspect, who is a Venezuelan migrant, according to the agency, and who has been taken into custody in connection with Thursday’s shooting death of a Loyola University freshman.

Cook County sheriff's police officers patrol the 95th Street Red Line CTA station in Chicago on March 11, 2026. (Chris Sweda/Chicago Tribune)
Cook County sheriff’s police officers patrol the 95th Street Red Line CTA station in Chicago on March 11, 2026. (Chris Sweda/Chicago Tribune)

CTA riders and workers have been assaulted at rates at least double other public transit agencies

Workers and passengers on the Chicago Transit Authority have been assaulted at rates at least double those of comparable public transit systems around the country, according to a Tribune analysis of federal data.

The analysis comes as the Trump administration has accused the CTA of doing too little to address violent crime on mass transit, in another front of the political war between the feds and leaders in deep blue Illinois.

Firefighters and supporters exit after attending the postponed detention hearing for Sheaves Slate, charged in connection with the death of firefighter Michael Altman at the Leighton Criminal Court Building, March 21, 2026, in Chicago. Altman died on March 17 after suffering injuries while working to extinguish a building fire in Rogers Park the previous day, which Slate is charged with starting. (John J. Kim/Chicago Tribune)
Firefighters and supporters exit after attending the postponed detention hearing for Sheaves Slate, charged in connection with the death of firefighter Michael Altman at the Leighton Criminal Court Building in Chicago on March 21, 2026. Altman died March 17 after suffering injuries while working to extinguish a building fire in Rogers Park the previous day, which Slate is charged with starting. (John J. Kim/Chicago Tribune)

Hearing postponed for man charged with murder, arson in Chicago firefighter’s death

A detention hearing was rescheduled for today for a man charged with arson and murder in the death of Chicago firefighter Michael Altman.

The defendant, Sheaves Slate, 27, of Avondale, was hospitalized and did not appear for his hearing Saturday. Slate was charged Friday with both residential arson and aggravated arson, along with murder, in connection with the fire in Rogers Park that led to Altman’s death, police said.

Artist Pablo Serrano stands by a new painting March 10, 2026, in his Pilsen studio. (Brian Cassella/Chicago Tribune)
Artist Pablo Serrano stands by a new painting March 10, 2026, in his Pilsen studio. (Brian Cassella/Chicago Tribune)

Locals with birthright citizenship hope the practice prevails as Supreme Court to weigh in

As the son of an undocumented mother and father, Pablo Serrano of Chicago says it would be painful for him — and harmful to the nation — if America were to end its long-standing practice of birthright citizenship for future generations.

An artist's tilework shows the Silver Spray, March 12, 2026, which sank in 1914 along the lakefront by 49th Street near Morgan Shoal. (Brian Cassella/Chicago Tribune)
An artist’s tilework shows the Silver Spray, March 12, 2026, which sank in 1914 along the lakefront by 49th Street near Morgan Shoal. (Brian Cassella/Chicago Tribune)

A push to protect Morgan Shoal — a marine wonder on the South Side — and the Chicago shoreline

A few hundred feet off the shoreline of Kenwood and Hyde Park lives an underwater marvel few Chicagoans ever see: the remnants of a 400 million-year-old coral reef scattered with ancient fossils and the wreckage of the Silver Spray, a steamship that sank after striking the shallow bedrock in 1914.

For free diver Jessica Christopher, the milelong stretch of underwater dolomite known as Morgan Shoal is a rare natural refuge along Chicago’s otherwise engineered lakefront.

Illinois center Tomislav Ivisic, right, goes up to block a shot from VCU guard Jadrian Tracey during the first half in the second round of the NCAA Tournament on Saturday, March 21, 2026, in Greenville, S.C. (Chris Carlson/AP)
Illinois center Tomislav Ivisic, right, goes up to block a shot from VCU guard Jadrian Tracey during the first half in the second round of the NCAA Tournament on Saturday, March 21, 2026, in Greenville, S.C. (Chris Carlson/AP)

Illinois big men rediscover their nastiness in advancing to the Sweet 16: ‘That’s a recipe to win for us.’

On the night Illinois lost to Wisconsin in the Big Ten Tournament, coach Brad Underwood lamented that his team didn’t show the requisite toughness to advance beyond the quarterfinal. The Illini weren’t nasty enough, didn’t give a s−−− enough, he said.

He no longer had those complaints Saturday night after Illinois completed two blowout wins against Penn and VCU in the first and second rounds of the NCAA Tournament.

Pete Crow-Armstrong, wearing a Catapult vest, walks on the field during live batting practice during Cubs spring training at Sloan Park on Feb. 19, 2026, in Mesa, Ariz. (Armando L. Sanchez/Chicago Tribune)
Pete Crow-Armstrong, wearing a Catapult vest, walks on the field during live batting practice during Cubs spring training at Sloan Park on Feb. 19, 2026, in Mesa, Ariz. (Armando L. Sanchez/Chicago Tribune)

How the Chicago Cubs are using biometric data to further player development and health

Jameson Taillon’s calf injury presented a problem.

For seven weeks last season Taillon rehabbed his calf. By the time he could return to the Chicago Cubs rotation, late August approached. Taillon had been limited by what he was able to do with his lower half because of his ailing calf, but he wanted to find a way to keep his right shoulder in shape and built up. Months earlier, during spring training, Taillon started wearing Catapult technology for the first time in his career.

Tahliah Debrett Barnett, known professionally as FKA Twigs, performs at the Riviera Theatre on Nov. 15, 2019, in Chicago. (John J. Kim/Chicago Tribune)
Tahliah Debrett Barnett, known professionally as FKA Twigs, performs at the Riviera Theatre in Chicago on Nov. 15, 2019. (John J. Kim/Chicago Tribune)

FKA Twigs brings ‘Body High’ tour to Chicago: ‘Dance music is so communal’

Despite her tireless work over the past few weeks, FKA Twigs, born Tahliah Debrett Barnett, was full of energy and was excited to discuss her upcoming show at Chicago’s Wintrust Arena. She promised those attending the show that she had hopefully “created something that fans have never seen before.”