Although Mr. Ganim has offered to negotiate with the handgun manufacturers, he said he doubted that they would.
But supporters said the requirement would be adopted by other states and would prod handgun manufacturers to develop fingerprint-recognition devices more quickly.
The amendment would require handgun manufacturers to sell weapons with child-proof locks.
With highly efficient assembly lines in this southern city, Brazil's largest handgun manufacturers feed American demand for reliable, inexpensive guns.
Her father retired as president of Dan Wesson Arms, a handgun manufacturer in Monson, Mass.
The Python Hunter was the first field-ready handgun hunting package made by a major handgun manufacturer.
The majority of the guns are manufactured by Asian companies licensed by handgun manufacturers to use their designs.
The Senate voted Thursday to require handgun manufacturers to sell weapons with child-proof locks.
He received no contributions from the handgun industry, although some handgun manufacturers are based in Connecticut.
Three years later in 2006, Ms. Halligan filed a brief alleging that handgun manufacturers were guilty of creating a public nuisance.