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Federal agents search Rep. Ilhan Omar's Washington home amid an immigration fraud investigation, while Elon Musk commits more than $276 million to Republican midterm campaigns. Meanwhile, a judge halts Trump's tree-cutting project at a historic D.C. golf course, and the S&P 500's four-year rally shows signs of narrowing.

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Agents with Homeland Security Investigations searched Rep. Ilhan Omar's Washington home Monday morning, executing what the Justice Department called a judicially authorized warrant tied to an ongoing federal investigation. Omar, a Minnesota Democrat, called it an attempt to target political enemies and said Trump has targeted her with baseless lies and smear campaigns for ten years.

A current official told NPR the search is part of a multiyear probe that includes whistleblower complaints, while a former official said the case involves immigration fraud allegations. Federal authorities released no further details about the probe, and with Congress out of session, the BBC reported it was unclear whether Omar was even at home.

Elon Musk has quietly become the biggest known donor this year, giving more than $276 million since July to help Republicans keep their congressional majorities, his super PAC confirmed. The total includes $158 million to the Senate Leadership Fund, the main super PAC backing GOP Senate candidates and one of the largest known political donations in American history.

Another $76 million went to Musk's own America PAC for a door-knocking turnout operation, while $10 million backed a group supporting Ken Paxton, the Republican Senate nominee in Texas. The spending is a sharp turnaround from last May, when Musk said he intended to cut back on political giving, remarking at the time, "I think I've done enough."

U.S. District Judge Ana Reyes on Monday ordered a 24-hour halt to tree-cutting at Washington's historic East Potomac Golf Course, a site in President Trump's plans to remake the city. Reyes said the temporary order could be extended to 14 days after she accused the government of deceiving her with a massive tree-cutting operation over the holiday weekend.

"I am thoroughly unamused right now," Reyes said, opening a tense three-hour holiday hearing with a blistering 15-minute statement aimed squarely at the government's lawyers. She plans another hearing Tuesday and wants to hear from Greg Wischer, the Interior Department deputy chief of staff who reportedly pushed for the work to happen urgently.

Foreign Secretary Ed Miliband summoned Iran's ambassador, declaring that Britain will not tolerate threats on its soil after last month's incident at RAF Fairford, an air base in England.

India's opposition parties marched on the Supreme Court Monday to protest a purge of voter lists they say favors Narendra Modi's party, after police detained thousands of activists.

Canadian Prime Minister Mark Carney urged Alberta to stay, warning that the Oct. 19 provincial vote could begin a long and uncertain process toward separating from Canada.

The archbishop for U.S. military Catholics condemned plans to livestream the execution of Fort Hood gunman Nidal Hasan and urged Catholic soldiers to ask to be excused from firing-squad duty.

Texas health officials proposed eliminating all funding for the state's Children's Autism Program, which funded therapy for 583 children in fiscal 2026 as at least 1,000 more sat on waitlists.

New York City Mayor Zohran Mamdani ordered the NYPD's first use-of-force policy review in a decade, plus reforms so officers accused of serious misconduct face discipline before retiring.

McDonald's is betting big on chicken, but new card-spending data from Consumer Edge shows Chick-fil-A and coffee chains like Starbucks and Dutch Bros winning more of its customers' spending.

American economists Robert Hall and Michael Woodford won the Nobel Prize in economics for models that help governments and central banks manage economic shocks like energy crises and inflation.

UnitedHealth Group heads into Tuesday's earnings with implied volatility running at twice its realized level, a pricey hedge on shares that have been basically flat for five years.

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The Pacific's supersized El Niño season has broken a record for long-lasting storms east of the date line, passing the 2018 mark for accumulated cyclone energy on Sunday, scientists said.

Hackers hijacked the temperature control software at hundreds of supermarkets across France, forcing some refrigeration units to warm to 120 degrees Fahrenheit overnight and spoiling food worth millions of euros.

Quantum computing company IonQ agreed to buy cybersecurity firm Elisity in a deal worth up to $1.3 billion in stock to bolster its quantum security strategy, its CEO said.

San Francisco linebacker Dre Greenlaw drew a one-game suspension without pay for head-butting helmetless Seahawks linebacker Ernest Jones IV during the 49ers' 32-29 win over Seattle on Sunday.

Alexander Zverev clinched the year-end No. 1 ranking, becoming the oldest first-time holder at 29 after a breakout year with two Grand Slam titles, helped by Jannik Sinner's season-ending injury.

The Atlanta Dream are scrambling for a venue for WNBA Finals games on Oct. 22 and 24, with State Farm Arena booked for a concert and the Hawks' home opener.

Breaking Bad actor RJ Mitte has died at 34 in Brownsville, Texas, his representative said, describing a disability rights advocate who drew on his own cerebral palsy for the role.

Actor Selma Blair was taken into custody after allegedly injuring two Delta flight attendants, and her representative said she experienced a medical emergency that led to the alleged conduct.

Ben Affleck called the Justice League reshoots the low point of his career on the Happy Sad Confused podcast, citing his personal struggles and the tragedy surrounding Zack Snyder's exit.

What it is: The current bull market turned four years old on Monday, with the S&P 500 up nearly 120% since its closing low on Oct. 12, 2022. The index topped 7,800 for the first time just last week, extending a four-year run that has climbed what traders call a wall of worry.

The detail: Monday's session left the S&P 500 down 0.1% at 7,807.24, near its record, as the Dow rose 0.4% and the Nasdaq slipped 0.4% with U.S. bond trading closed. Tech now makes up about 40% of the broader index, and chipmaker Nvidia alone is worth roughly $5.5 trillion after first crossing the $1 trillion mark back in 2023.

Why it matters: Oppenheimer's Ari Wald ranks it the sixth-longest of 24 bull markets since 1932, and the median cycle had about 13 months left, suggesting 2027 could be the final leg. Breadth is fading too, since 75% of S&P 500 stocks closed lower in September as fears of higher interest rates pushed investors back into a handful of mega-cap companies.

What to watch: This week brings inflation and retail sales data, while Wald is watching whether the Russell 2000 holds its 200-day moving average, calling relative weakness "a warning, not an opportunity." Third-quarter earnings season is expected to be strong, but some investors worry results may not clear expectations that have climbed so high during the rally.

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Food world records piled up this year, with 1,474 pounds of french fries in Idaho, a nearly 430-foot Slim Jim and 15 fish sticks eaten in a minute.

Chinese carmaker Zeekr earned a Guinness record after a driver drifted sideways through a narrow gap in Abu Dhabi with just 25 centimeters of total clearance in an electric 7X.

Michael Jordan's 1998 NBA Finals road jersey sold for a record $14 million, the red top he wore while scoring a game-high 37 points against Utah in Game 2.

The Pledge of Allegiance debuts nationally on Columbus Day (1892) · Nikita Khrushchev's famous outburst rattles the UN General Assembly (1960) · An IRA bomb tears through Brighton's Grand Hotel during the Conservative Party conference (1984) · The UN marks the "Day of Six Billion" for world population (1999) · Bombings at Bali nightclubs kill 202 people (2002)

"...this attack has failed, but that all attempts to destroy democracy by terrorism will fail." — Margaret Thatcher, British prime minister, hours after the Brighton bombing

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