“Amtrak is raising serious objections to a proposal that would allow passengers to stow unloaded guns in their checked baggage, saying the train operator cannot screen passengers’ bags the same way airlines do. The Senate passed a measure last month that would allow passengers to declare and check a weapon on the trains, something airline passengers can do now, provided the weapon is unloaded and in a hard and locked case. But Amtrak and some House members are against the idea. The House did not