No moves in Congress on 3-D gun ban renewal – A federal law banning firearms that cannot be detected by walk-through metal detectors expires in less than a month, but Congress has yet to act despite the rise of new technologies that can produce ā€œ3-Dā€ plastic guns.  A bill introduced this summer by Democratic Sens. Charles E. Schumer of New York and Bill Nelson of Florida has shown no sign of moving toward passage, and the status of a House bill that revamps the Undetectable Firearms Act is unclear.