Kristi Noem faced frustration from some Republicans during a Senate oversight hearing Tuesday over how she’s handling her job as secretary of homeland security.

During the nearly five-hour hearing, Sens. Thom Tillis (R-N.C.) and John Kennedy (R-La.) criticized Noem for refusing to take responsibility for the killings of two U.S. citizens, Renée Good and Alex Pretti, by federal agents in Minnesota, and for allegedly stalling investigations into the Department of Homeland Security while spending hundreds of millions of taxpayer dollars on agency ads.

“We’re beginning to get the American people to think that deporting people is wrong,” Tillis said about Noem’s job as DHS secretary. “It’s the exact opposite. The way you’re going about deporting them is wrong.”