While Congress retains its inherent contempt authority and may exercise it at any time, this inherent contempt process was last used by the Senate in 1934, in a Senate investigation of airlines and the U.S. Postmaster.
To make a scared cat feel more comfortable, set up a covered cave for them to retreat to. Line it with soft bedding and partially cover the entrance so that the cat will feel safely obscured inside. In the same vein of thought, you can purchase a cat tower for the cat to lie on top of.
Prepare a room for the feral cat. The feral cat should remain in an enclosed area until she becomes more comfortable with you and her new environment. Prepare a small and quiet room, such as a bathroom, that is away from people and other pets. Place a litterbox, a food bowl, a water bowl, and some toys in the room.