Detroit Police Sgt. Denise Wallet, who was suspended for 30 days without pay for allegedly contacting U.S. Customs and Border Protection (CBP) during a routine traffic stop, has filed a federal lawsuit against the City of Detroit, arguing her suspension violated her due process rights.

Wallet said she contacted CBP because her lieutenant ordered her to do so and that it was simply to identify a driver, not to enforce immigration law.

Her attorney, Solomon Radner, told Fox News that while department policy explicitly states personnel are not allowed to cooperate with immigration enforcement or to treat people differently based on a wide range of factors, including immigration status, none of that is at issue.

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"That's not even alleged to have happened in this case. All they really say is that she contacted [CBP] and therefore was somehow guilty of differential treatment of people," Radner said Tuesday on "Fox & Friends First."

The lawsuit comes after Detroit Police Chief Todd Bettison initially planned to fire two officers, including Wallet, over two separate incidents involving contact with federal immigration enforcement during traffic stops, before deciding to suspend them instead.

Bettison said the officers’ actions led to detentions and ran counter to long-standing department rules prohibiting involvement in federal immigration enforcement, FOX 2 Detroit reported. He stressed that maintaining community trust is critical to public safety efforts.

Radner believes Bettison may have received "incorrect information" about the incident involving Wallet early in the investigation, either unintentionally or intentionally.

"Over his career, I’ve had a lot of respect for him. I still have a lot of respect for him," Radner said of the chief. "I disagree with him wholeheartedly on this."

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Retired Detroit Police Assistant Chief Steve Dolunt told the station that contacting CBP during routine stops clearly violates department policy, but he wasn't sure if termination was consistent with past discipline.

U.S. Immigrations and Customs Enforcement (ICE) responded to plans to fire the officers on X, writing, "We have a place for you, patriots."

Radner told Fox News he didn't know whether Wallet would take a job with ICE and said he hopes she can be reinstated to her current position with pay, adding that she is under an "incredible amount" of stress and pressure.

"She's never dealt with anything like this before," he said.

Fox News Digital's Greg Wehner contributed to this report.

France has restricted U.S. Ambassador Charles Kushner’s access to senior government officials after he failed to attend a summons from the French Foreign Ministry over comments regarding the death of a French activist.

Speaking Tuesday in an interview with public broadcaster France Info, French Foreign Minister Jean-Noël Barrot said Kushner’s decision not to appear at the Quai d’Orsay "will naturally affect his ability to carry out his mission in our country," and demanded "explanations" from the ambassador.

Barrot described the no-show as a "surprise," saying that when an ambassador has "the honor of representing your country in France," they are expected to "respect the most basic practices of diplomacy" and respond to summons from the ministry.

The diplomatic dispute stems from social media posts by official U.S. government accounts following the death of Quentin Deranque, a 23-year-old activist who was killed in Lyon earlier this month.

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The Associated Press reported that Deranque, described as a fervent nationalist, was beaten during clashes between far-left and far-right activists and later died of brain injuries sustained in the attack.

"Reports, corroborated by the French Minister of the Interior, that Quentin Deranque was killed by left-wing militants, should concern us all. Violent radical leftism is on the rise and its role in Quentin Deranque’s death demonstrates the threat it poses to public safety," the U.S. State Department’s Bureau of Counterterrorism said in a Feb. 19 post on X. "We will continue to monitor the situation and expect to see the perpetrators of violence brought to justice."

The U.S. Embassy in France later shared the statement on its official account.

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Barrot said the remarks amounted to an "injunction" toward France and rejected what he characterized as foreign interference in the country’s domestic political debate. 

"We have no lessons to learn in matters of maintaining order or public order in matters of violence and we have no lessons to learn at all from the reactionary international, simply," he told France Info.

The State Department did not immediately respond to Fox News Digital's request for comment.

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Barrot said Kushner could regain access to French officials if he provides clarification to the ministry, stressing that the dispute would not alter broader relations between France and the United States. 

He noted the two countries are preparing to mark the 250th anniversary of their historic alliance this year and expressed hope that cooperation would continue "in this spirit."