From this AP story on fox4kc.com:
The Kansas Legislature has approved a bill that would allow the use of silencers for hunting, fishing and fur harvesting. The bill, supported by the National Rifle Association, is awaiting Gov. Sam Brownback's signature. The Hays Daily News reports that the bill received only one no vote in the Senate and was unanimously approved by the House last week.
_Chris Tymeson, chief counsel for the Kansas Department of Wildlife and Parks, says he doesn't know how if many people own silencers, in part because they are expensive and must be licensed by federal authorities. Owners also must undergo an FBI background check. He says a few people have filed requests with the state's wildlife agency to be able to use silencers, mainly for shooting prairie dogs.