Chicago experienced a chaotic — and violent — weekend of clashes between federal law enforcement and protesters, prompting President Trump to call up hundreds of National Guard members to Illinois.

The big picture: Gov. JB Pritzker said the Trump administration's War Department presented him with an ultimatum Saturday: "'call up your troops, or we will.'"

The latest: Pritzker posted on X last night that the president ordered "400 members of the Texas National Guard for deployments to Illinois ... no officials from the federal government called me directly to discuss or coordinate."

Driving the news: A man and woman allegedly used their vehicles Saturday morning to strike a U.S. Customs and Border Protection agent's car and box in other agents' vehicles near 39th Street and South Kedzie Avenue, according to a complaint by the U.S. Department of Justice.

• One of the agents then fired shots and struck one of the drivers, Marimar Martinez, who was later taken to a hospital and released.
• The feds charged Martinez and Anthony Ian Santos Ruiz on Sunday with forcibly assaulting, impeding, and interfering with a federal law enforcement officer.

Zoom out: The clash in Brighton Park capped a week that included a raid at an apartment building in South Shore and a federal agent handcuffing Ald. Jessie Fuentes.

What they're saying: "We must now start calling this what it is: Trump's Invasion. It started with federal agents, it will soon include deploying federalized members of the Illinois National Guard against our wishes, and it will now involve sending in another state's military troops," Pritzker said last night.

The other side: "Amidst ongoing violent riots and lawlessness, that local leaders like Pritzker have refused to step in to quell, President Trump has authorized 300 national guardsmen to protect federal officers and assets," White House spokesperson Abigail Jackson told Axios in a statement.

What we're watching

The U.S. Department of Transportation delivered a blow to the CTA Friday when it announced it was freezing $2.1 billion in funding.

Why it matters: That decision puts the long-awaited completion of the CTA's Red Line Extension in jeopardy, as well as continued work on the Red and Purple Modernization Project.

Driving the news: DOT informed the CTA that remaining funding for both projects is under administrative review "to ensure no additional federal dollars go towards discriminatory, illegal, and wasteful contracting practices."

• The review comes after USDOT issued an interim final rule barring race- and sex-based contracting requirements from federal grants based on a program that's meant to ensure minority-owned businesses are considered for capital projects.

Catch up quick: The project would extend the Red Line 5.5 miles and add four stops, providing better public transit access to the city's predominantly Black South Side.

The other side: "Chicagoans have waited far too long to turn back now. We will fight to ensure that the Red Line Extension and the Red and Purple Modernization Project move forward," Mayor Brandon Johnson said in a statement.

Zoom out

🛣️ Kennedy express lanes are set to return to normal today as the three-year overhaul of the expressway starts to wrap up. (Sun-Times)

A Skokie synagogue held a vigil yesterday to commemorate the second anniversary of Hamas' October 7 attack on an Israeli music festival. (Tribune)

⚾️ Pitcher Shota Imanaga is expected to start tonight for the Cubs against the Brewers in Milwaukee. The Brewers lead the playoff series 1-0. (NBC 5)

Delaying the morning phone scroll — even by just a few minutes — could do wonders for your brain.

Zoom out: Blocking smartphone access for two weeks — or even three days — is linked to more dopamine and serotonin and improved well-being, studies show.

• And limiting phone usage to two hours a day had similar effects.
• But even doing something else in the morning before looking at your phone can be hugely helpful, behavioral scientist Zelana Montminy, the author of the new book "Finding Focus," tells Axios.

Zoom in: "Your brain sort of wakes up like wet cement," says Montminy. The first "imprint" you make matters, she says.

• Instead of checking messages, she suggests checking in with yourself: Are you well-rested? Can you remember your dreams?

Helpful tips

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👋 Hi, it's Justin. I'm reviewing each game of the 1985 Bears Super Bowl season in honor of the 40th anniversary.

This week: Bears at Tampa Bay (Oct. 6, 1985)

Recap: The undefeated Bears strolled into Tampa Stadium to play the winless Buccaneers. It should have been a cakewalk, but just like the first week of the season, the division rivals pushed the Bears to the brink.

Yes, but: Even with a 12-3 halftime lead, the Bucs couldn't stop the Bears, who won 27-19.

The star: Walter Payton. He scored two touchdowns in the 4th quarter and passed 100 career touchdowns in this game.

• Also, tight end Emery Moorehead had huge catches as the Bucs double-covered the Bears' wideouts for most of the game.

Play of the game: Dave Duerson's interception halfway through the 3rd quarter energized the Bears.

Non-football moments: The announcers mentioned that two college soccer teams, who had partied at the hotel the night before, kept the broadcasters and players up all night.

The bottom line: The Bears won ugly. But they won.

• The team is now 5-0.

Next week: Rematch of the 1984 NFC Championship game against the 49ers in San Francisco.

More 1985 game recaps