WASHINGTON (Reuters) - The U.S. House of Representatives voted on Wednesday to overturn a recently enacted law requiring safety trigger locks on all hand guns sold in the United States. The Republican-controlled House handed a victory to opponents of gun control by a vote of 230-191. Rep. Marilyn Musgrave, a Colorado Republican, argued that the added cost of the trigger locks is passed on to gun owners and that they "do not stop accidental shootings." Last fall, President George W. Bush signed legislation giving gun makers broad protections from civil lawsuits, but that law contained the mandatory trigger lock provision....