The U.S. Fish & Wildlife Service has played an influential role shaping the PCB clean-up project on the upper Hudson River.
The agency's scientists have questioned repeatedly whether the river is clean enough for fish and other wildlife to recover from pollution dumped in the river by General Electric.
Now the Trump administration has appointed a new leader for the Fish & Wildlife Service who has past ties to industry. It's unclear how that change will affect the debate over clean-up efforts on the Hudson.