Senate Republicans on Thursday blocked a bill to create domestic terrorism offices within federal law enforcement agencies in response to a mass shooting in Buffalo, N.Y., that left 10 people dead. Senate Majority Leader Charles Schumer (D-N.Y.) framed the Domestic Terrorism Prevention Act as an opportunity to vote on Republican and Democratic amendments to curb gun violence, but his plea for GOP support to begin the debate fell flat with Republican colleagues. “The bill is so important because the mass shooting in Buffalo was an act of domestic terrorism. We need to call it what it is, domestic terrorism. It...