Travel headaches are growing at Houston airports as the government shutdown drags on, and TSA workers warn the situation is nearing a breaking point.

Immigration and Customs Enforcement (ICE) agents are now working alongside TSA officers at Houston-area airports, but exactly what they’re doing—and how much authority they have—remains unclear.

Houston police say a man stole an undisclosed amount of money from a person after showing a badge, posing as an ICE agent.