Department of Homeland Security Secretary John Kelly on Tuesday said he is “shocked” some officials are “rejoicing” that funding is delayed for President Donald Trump’s proposed U.S.-Mexico border wall.

“Frankly I am shocked at the behavior of some individuals in public service or public office,” Kelly said, speaking at the beginning of the White House’s daily press briefing.

Kelly did not name those individuals, but said they are “rejoicing in the fact that that wall will be slower to be built” rather than “celebrating how they’ve managed to reduce the amount of money” required for its construction.

Since Trump’s inauguration, his administration has lowered expectations about the wall and delayed obtaining funding in order to avoid a government shutdown, though Trump insisted last week that “the wall’s going to get built.”

“This is our government’s largest investment in border security in 10 years,” Kelly said on Tuesday. “We need more to keep moving forward.”