When the Trump administration secured billions in funding for the Department of Homeland Security, officials immediately kicked off an aggressive push to hire thousands more deportation officers. It came with a hefty financial incentive: up to a $50,000 signing bonus.

But the effort has hit roadblocks every step of the way.

Multiple sources tell CNN that behind the scenes, ICE was ill-prepared to onboard a surge of agents in a matter of months, resulting in cut corners and people slipping through the cracks, including an informant for the Drug Enforcement Administration who had to be plucked out of the pool of candidates after the agency flagged them to ICE.

“It’s a shit show,” an administration official familiar with the efforts told CNN.

The ongoing recruitment efforts were the source of tension in a multi-agency meeting this week with White House deputy chief of staff Stephen Miller, the driving force behind President Donald Trump’s deportation agenda. Miller expressed frustration with senior ICE officials over the slow pace at which new recruits are hitting the streets to make immigration arrests, according to the administration official.

The signing bonus also prompted discussions internally because it’s not contingent on a key part of the hiring process, which is passing the academy, another source said.