Members of Congress responded with skepticism and caution Tuesday to the Trump administration’s decision to impose export controls on Anthropic’s newest AI models.

The Friday order, which Anthropic said forced it to disable its Fable 5 and Mythos 5 artificial intelligence models, was prompted by what the administration said were national security concerns that a large number of cybersecurity professionals have dismissed as ill-founded.

Several Hill Democrats told CyberScoop they were concerned that the administration’s decision was driven by other considerations. Notably, the administration has feuded with Anthropic over use of its models for domestic surveillance and fully autonomous weapons.

Sen. Angus King, a Maine independent who caucuses with Democrats, said he would need to be convinced it was a legitimate national security order and hadn’t yet seen a full justification.

“What they did was pretty extreme, and I’d want to see what the basis was, as opposed to all the other issues that are swirling around in cybersecurity,” he said. “I’m a little skeptical because of their otherwise announced antipathy to this company.”

Leaders of the House Homeland Security Committee had contrasting takes, with Chairman Andrew Garbarino, R-N.Y., offering a two-pronged response and the top Democrat on the panel, Bennie Thompson of Mississippi, panning the order.

“The administration is right to treat advanced AI cyber capabilities as a national security issue, especially when foreign adversaries and cybercriminals are actively looking for ways to weaponize these tools,” Garbarino said in a statement. “At the same time, we need to make sure our response does not unintentionally disadvantage American companies, allied partners, or critical infrastructure defenders who need access to the best secure tools available in order to protect our networks here at home.”

The United States, not China, needs to set standards for trusted AI, Garbarino said.

But Thompson said the order adds evidence to the appearance that the Trump administration doesn’t “have a coherent plan for mitigating the cybersecurity risks” of frontier AI models, he told CyberScoop in a statement.

“AI regulations should rely on standards and procedures that provide confidence to the public that decisions are based on the evidence and not on politics,” he said. “Instead, the Trump administration has adopted an ad hoc approach where decisions are made by political appointees in the White House rather than experts and where companies are left guessing on how to comply.”

Virginia Sen. Mark Warner, the top Democrat on the Intelligence Committee, had also previously highlighted the administration’s quarrel with Anthropic in response to the order in a statement to CyberScoop.

Behind the scenes, the administration and Anthropic were reportedly continuing to try to forge a truce Tuesday. More broadly, the administration’s AI executive order had a rocky rollout as the administration swung back-and-forth on how involved the government should be.

Some lawmakers deferred on commenting Tuesday, such as Senate Homeland Security Committee Chairman Rand Paul, R-Ky., who told CyberScoop he didn’t have anything to say on the order.

Others said they were still seeking information from the administration.

“I have not had the opportunity to get a brief specifically as to the logic, the reasoning behind it, and so forth,” said Sen. Mike Rounds, the South Dakota Republican who chairs the Armed Services Subcommittee on Cybersecurity. “So I’m going to withhold judgment until I get an opportunity to get the rest of the story, so to speak.”

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Department of Homeland Security Secretary Markwayne Mullin told Congress Wednesday that the Cybersecurity and Infrastructure Security Agency would ideally have 2,800 personnel, up from approximately 2,200 now and down from 3,400 before the second Trump administration began.

President Donald Trump has pushed to dramatically reduce personnel numbers at the agency, something that has drawn criticism from both Democrats and Republicans on the Hill. Trump has proposed hundreds of millions more in cuts for fiscal 2027.

House Homeland Security Committee Chairman Andrew Garbarino, R-N.Y., asked Mullin at a hearing Wednesday about further proposed CISA budget cuts, saying he was “concerned” about personnel numbers and funding for education programs and whether the fiscal 2027 blueprint would “negatively impact those efforts.”

Mullin said DHS funding lapses have made the department rethink CISA, although the deep CISA personnel reductions predate the recent spate of government shutdowns. 

“We had to readjust the way we’re looking at CISA and better lean on public partnerships,” he said. The agency can work well with 2,800 people “If we can actually have the partnerships we need with states and be able to use the grants, the monies that [we] saved with CISA to be able to invest with local and state municipalities. … We’re not going to fail on the mission we have in front of us.”

CISA personnel figures are in a constant state of flux. The CISA staff figure of 2,200 Mullin gave is down even from December. In March, acting director Nick Andersen said CISA was looking to hire 300 people.

There’s been no proposal from the Trump administration to-date to take funds formerly allocated to CISA and shift them to state governments for cybersecurity. State officials have said CISA budget cuts have made their jobs harder, and most experts have said the Trump administration’s approach to shift cyber responsibilities to states is badly misguided.

Congress has yet to permanently reauthorize the State and Local Cybersecurity Grant Program that expired last year before it got a temporary extension and is due to expire again in September.

CISA has gone without a Senate-confirmed director for the entirety of the second Trump administration. Mullin said “we’ve got a person soon to be nominated that will be running CISA that has the ability to recruit and focus on the authorities we have.”

Mullin said CISA has “unique” authorities that haven’t “been completely utilized.” 

“We want CISA to be the leader in cybersecurity,” he said. “They should be and they will be.”

A House Appropriations subcommittee is set to consider a DHS funding bill Friday.

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Illinois Rep. Delia Ramirez is taking over as the top Democrat on the House Homeland Security panel’s cybersecurity subcommittee, replacing former Rep. Eric Swalwell after his resignation.

Committee Democrats approved the change Tuesday at a meeting prior to a “shadow hearing” without the GOP majority, focused on protecting elections from Trump administration interference.

Ramirez first won election to Congress in 2022 and was reelected in 2024. She has served as the vice ranking member of the committee since 2023. She is now the ranking member of the Subcommittee on Cybersecurity and Infrastructure Protection.

She has leveled criticisms during committee hearings about the Trump administration’s personnel cutbacks at the Cybersecurity and Infrastructure Security Agency, and was critical of how data was secured under the administration’s Department of Government Efficiency initiative led by Elon Musk.

“Under a Musk and Trump presidency, it’s clear that the security of Americans’ information is not a priority. I mean, a private civilian with no security clearance bullied his way into the Treasury, set up private servers, and stole sensitive information from an agency. If that isn’t a national security crisis, a cybersecurity  crisis –then I don’t know what is,” Ramirez said at an early 2025 hearing. “The true threat to our homeland security is ‘fElon’ Musk, Trump, and their blatant misuse of power to steal information and coerce employees to leave agencies.”

She cosponsored legislation last year meant to strengthen the cybersecurity workforce by promoting measures to help workers from underrepresented and disadvantaged communities to join the field.

But she also had criticisms of U.S. cybersecurity under the Biden administration, including of Microsoft’s role in the SolarWinds breach.

In a statement about her appointment Tuesday, Ramirez took aim at at Trump, Vice President JD Vance, Department of Homeland Security Secretary Markwayne Mullin and White House homeland security adviser Stephen Miller.

“It’s clear that the security of our communities’ information, federal networks, and critical infrastructure have not been priorities” under them, she said. “Between the security failures of DOGE, the abuses of immigrant families’ data, and the decimation of CISA’s workforce and resources, Republicans have demonstrated a lack of interest in safeguarding our nation’s cybersecurity and our residents’ civil rights and privacy. In neglecting necessary oversight, Republicans have deregulated emerging technologies, allowed bad actors to profit from violations of our civil rights, and consented to the weaponization of government systems. It is more critical than ever that we assert our Congressional authority and disrupt the blatant corruption making us all less safe.”

Swalwell left the position following his resignation from Congress as a representative from California amid allegations of sexual misconduct.

Her ascension completes a full leadership turnover for the subcommittee. Rep. Andy Ogles, R-Tenn., took over the gavel late last year after former chairman Andrew Garbarino, R-N.Y., took over as chairman of the full committee.

The subcommittee is set to hold a hearing Wednesday on CISA and its role as the sector risk management agency for a number of critical infrastructure sectors.

Updated 4/28/26: to include comment from Ramirez.

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The U.S. government shouldn’t rigidly stick to traditional designations about which agency takes the lead on engaging with critical infrastructure sectors, the acting director of the Cybersecurity and Infrastructure Security Agency said Tuesday.

Sector risk management agency designations have long governed which agency is at the forefront of government efforts to protect each of the 16 critical infrastructure sectors, with CISA responsible for eight of them.

“When we look at our sector risk management agency construct, that’s important for a lot of reasons, It’s less important to abide by that strictly and say ‘CISA is the Sector Risk Management Agency for telecommunications,’” CISA’s Nick Andersen said at an event hosted by Auburn University’s McCrary Institute.

Rather, when responding to cyber incidents or undertaking other engagements with the private sector, the question should be who has the best relationship with a certain sector.

“We may have some owner-operators within a certain critical infrastructure sector that maybe the person they’re best positioned to receive resources from is us, or maybe it’s [Department of] Energy, or maybe it’s EPA, or maybe it’s FBI or NSA, or so forth and so on,” he said. “We just have to be comfortable with taking off those blinders and saying, ‘I don’t necessarily need to be in charge all the time no matter who I am. I just need to make sure that this owner-operator has the best partner teed up to lead that engagement.’”

The goal is to avoid another “Guam situation,” where “everybody was racing to Guam the last couple of years like kids chasing a soccer ball,” Andersen said. Guam was the site of critical infrastructure attacks on U.S. military bases that Microsoft pinned on the Chinese hacking group Volt Typhoon in 2023.

An attack on the telecommunications sector from another “Typhoon” group, Salt Typhoon, prompted questions about whether CISA’s hands are too full with all of its sector risk management agency responsibilities. House Homeland Security Chairman Andrew Garbarino, R-N.Y., raised concerns last year about how CISA handled its sector risk management agency role for the telecommunications sector after the Salt Typhoon campaign was uncovered.

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