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NBC News Top Stories

Should insurance cover weight loss drugs? Jury finds concert giant Live Nation acted as an illegal monopoly Justice Sonia Sotomayor issues unusual apology over 'hurtful' remarks about colleague Brett Kavanaugh Thom Tillis opens up on which Cabinet secretaries are giving Trump bad advice S&P 500 hits all-time high as investors shrug off Iran war oil price spike CDC warns rotavirus at high levels in the U.S., with life-threatening symptoms for kids Senate Republicans again block Democratic effort to end Trump's Iran war U.S. military turned back 10 ships since start of Iranian port blockade Teen charged with murder in stepsister's cruise ship death Rep. Tony Gonzales says he'll retire as he faces an ethics probe and possible expulsion vote Britney Spears encouraged by people close to her to get help after arrest, source says Rep. Gonzales says he'll retire from Congress Protests in Iran as U.S. blockades Strait of Hormuz 2 dead in U.S. military strike on alleged drug boat in eastern Pacific WNBA ushers in new draft class as league approves historic contract bumping players' pay President Trump's public feud with Pope Leo U.S. blocks Iranian ports after failed talks Rep. Eric Swalwell resigns following sexual assault and misconduct allegations Trump angered some ardent supporters with AI image appearing to depict him as Jesus Husband of missing boater released without charges How the war with Iran is impacting farmers Swalwell resigns after sexual misconduct allegations World's oldest known gorilla celebrates 69th birthday Oil prices rise as stocks erase losses sparked by Iran war New study reveals no negative effects of fluoride on brain function Trump admin agrees to restore Stonewall Pride flag Small plane makes emergency landing on Phoenix street Trump tips McDonald's DoorDash driver at White House Sabrina Carpenter and Justin Bieber headline Coachella Trump says he thought controversial AI image he shared depicted him 'as a doctor'
Trump’s oozing influence in the Texas primary runoffs and...
Kaylah Jackson · 2026-05-26 · via NBC News Top Stories

In today’s newsletter: The question of Trump’s GOP influence returns as Texas Attorney General Ken Paxton and Sen. John Cornyn are pitted against each other in one of the state’s primary runoffs. The U.S. military conducts strikes on Iran near the Strait of Hormuz and California officials narrow evacuation orders after the threat of a major chemical explosion dwindles.

Here’s what to know today.

John Cornyn’s last stand and Democratic fights: What to watch in today’s Texas elections

Ken Paxton and John Cornyn.
Ken Paxton; John Cornyn.Getty Images

Today’s primary runoffs in Texas will put President Donald Trump’s endorsement to the test again — the latest step in a mission to punish some incumbent Republicans Trump has deemed insufficiently loyal.

State Attorney General Ken Paxton has received the president’s backing in the Senate Republican primary runoff over longtime GOP Sen. John Cornyn. The move prompted concerns from party members who believe Paxton, who was impeached on bribery and corruption charges in 2023 and later acquitted, could put the Senate seat at risk.

Neither candidate won a majority of the vote in the March 3 primary. Cornyn finished narrowly ahead of Paxton, 42%-41%, in that contest.

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Though Cornyn has noted that the president “has consistently called me a friend,” his support of eliminating the Senate filibuster to pass the SAVE America Act and his hesitance to support Trump in 2016 have been sticking points. Cornyn did eventually endorse Trump in 2024.

The Paxton-Cornyn bout is one of several highly contested primaries happening in Texas.

Read more from our live coverage of today’s elections.

For Subscribers: A million people on Mars, a billion SpaceX shares: Inside Elon Musk’s peculiar performance-based bonuses

Mars.
NASA's Perseverance Mars rover used its dual-camera Mastcam-Z imager to capture this image of "Santa Cruz," a hill about 1.5 miles from the rover, in 2021.NASA / JPL-Caltech / ASU / MSSS

How long will it be before a permanent human colony is established on Mars? Scientists say we have a long way to go, but the benchmark is one of several oddities in an investor prospectus that SpaceX filed last week with the U.S. Securities and Exchange Commission.

“The reality is that Mars is an incredibly inhospitable place for humans to live,” said Briony Horgan, a professor of planetary science at Purdue University in Indiana.

According to the prospectus, the SpaceX board in January approved giving CEO Elon Musk 1 billion shares of stock if the company establishes a permanent human colony on Mars with at least 1 million people, along with other milestones. It also detailed that he intends to hold 85% voting control over the company and wear three hats: chairman, chief executive officer and chief technology officer.

The IPO could make Musk the world’s first trillionaire based on his existing equity in the company, before he vests in any performance-based shares, and it could be the biggest IPO ever.

The compensation deal does not include a specific deadline for the Mars project, but with Musk’s current large share of the company, he would benefit from any appreciation in the stock price.

Read more on Elon Musk’s enterprising goals for Mars here.

U.S. military conducts strikes in Iran near the Strait of Hormuz

An Iranian flag appears in the foreground with a cargo ship in the background.
An Iranian flag flutters in the wind as ships remain anchored in the Strait of Hormuz near Larak Island, Iran on May 16.Majid Saeedi / Getty Images file

After a weekend that saw Trump raise and then lower expectations that an agreement to end the war in Iran may be close, the U.S. military struck targets near the Strait of Hormuz.

There was no announcement of any change in the temporary ceasefire between the U.S. and Iran, which went into effect April 8. The U.S. targeted “missile launch sites” and “Iranian boats attempting to emplace mines,” according to a spokesman for U.S. Central Command.

Trump and his team have suggested a deal could be imminent, though Tehran has been more reserved in its assessment of the talks.

The framework of a potential agreement, according to a senior administration official, would give the two sides 60 days to reach a full peace deal.

One of Trump’s priorities remains Iran giving up the “nuclear dust” — his term for enriched uranium.

In exchange, the U.S. would gradually lift its naval blockade and offer Iran long-sought financial relief for its ailing economy. However, the official said this would only happen once Tehran followed through on its side of the agreement to reopen the Strait of Hormuz. If the deal goes into effect soon, the 60-day window would push the next ceasefire deadline to late July or early August.

Read more about the latest in negotiations to end the war in Iran.

Thousands can return home after ‘catastrophic’ explosion risk at California tank is averted

Southern California Chemical Tank
Water is sprayed Friday on a tank that overheated at an aerospace plant in Garden Grove, Calif.Jeff Gritchen / The Orange County Register via AP

Evacuation orders were lowered from around 60,000 to 16,000 people in a Los Angeles city area after an overheating at a chemical tank spurred first responders and experts to descend on the facility.

“The most catastrophic and worst-case scenario was mitigated and resolved,” interim Orange County Fire Chief TJ McGovern said.

The incident began on Thursday at a GKN Aerospace facility, where Orange County fire officials found that temperatures in a tank of methyl methacrylate, a toxic chemical used to manufacture resins and plastics, were rising. At one point, the temperature gauge read 100 degrees Fahrenheit, the highest the gauge would go. By Monday, it had dropped to 93 degrees, an official said.

Millions of gallons of water have been poured onto the tank to lower the temperature inside. Although a fire and a very small explosion risk are still a concern, no injuries or contamination from the incident have been reported.

Evacuation orders will be re-evaluated today, officials said, for the remaining 16,000 people.

Read more about the latest emergency response efforts here.

It’s not too late to shop Home Depot’s Memorial Day sale

With deals starting as low as $2, now’s the perfect time to save big on home tools, gardening supplies, appliances and more. For the DIYers among us, there’s tons of discounts on hand tools and paint supplies, but there are major markdowns across the entire site. Hurry, the sale ends tomorrow.

Sign up to The Selection newsletter for hands-on product reviews, expert shopping tips and a look at the best deals and sales each week.

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Thanks for reading today’s Morning Rundown. Today’s newsletter was curated for you by Kaylah Jackson. If you’re a fan, please send a link to your family and friends. They can sign up here.