Trump administration budget chief Russell Vought told lawmakers Tuesday that he’s willing to work with Department of Homeland Security Secretary Markwayne Mullin on re-staffing up the Cybersecurity and Infrastructure Security Agency, following deep personnel cuts and further proposed reductions in the fiscal 2027 budget blueprint.

Mullin said last week at a House Appropriations Subcommittee on Homeland Security hearing that he would like to hire 600 more people at CISA, similar to remarks he made earlier this month at another House hearing. President Donald Trump has cut or lost more than 1,000 from an agency that stood around 3,400-strong at the end of the Biden administration — cuts criticized by lawmakers in both parties.

At a House Appropriations Subcommittee on Financial Services and General Government   hearing Tuesday, Rep. Mark Amodei, R-Nev., asked Vought about Mullin’s CISA remarks.

“You don’t just flip a light switch on, and you got 600 folks over in CISA now. What’s the plan for getting CISA fully operational?” Amodei, who chairs the panel’s Subcommittee on Homeland Security, asked. “How do we make sure we have a robust, effective, cost-effective CISA force? Because I don’t think anybody thinks we have it now.”

Vought, director of the Office of Management and Budget, said he hasn’t received a formal request from Mullin to increase CISA’s number of full-time employees, but knows that hiring isn’t instantaneous.

“He was not here when we developed this budget, so if he feels the need to have additional resources, we will work through that internally, and at the appropriate time, come up and brief you,” he answered Amodei. “I do think he’s in the process still of getting his arms wrapped around the department,” he said. Mullen became DHS secretary in late March.

“This is probably one of those things, particularly in the cyber world, you now have a year and a half of a new administration,” Vought continued, and referred to conservative complaints about how CISA handled election security and disinformation under Biden. “We saw this agency had major concerns with it in our four years outside of government and with new management, I think it’s now an agency, or could be an agency, that plays a very valuable part for DHS’s portfolio.”

Bringing hundreds of new CISA personnel on board could prove challenging for reasons beyond the usual bureaucratic hurdles and security clearance processes that slow any federal hires in the national security space. Past CISA employees and agency observers have said the way the Trump administration has purged personnel and treated those who have stayed could prove a further disincentive to future hires.

Acting CISA director Nick Andersen recently said that the agency has begun the process of hiring new CISA staffers, and expected to have nearly 200 job offers out by the end of this month.