 Complete the following phrase:  McCarthy was one of the nations most vocal gun control advocates. In 1997, she sponsored a bill requiring trigger locks on guns. After the 1997 Empire State Building shooting, she introduced legislation to ban the sale of guns to tourists visiting the United States; afterwards, she received threats serious enough to require police protection during most public appearances. Later that year, McCarthy unsuccessfully opposed a Treasury bill provision that allowed the importation of weapons that had been modified in order to be compliant with the federal assault weapons ban. In the aftermath of the 