By Travis Gettys A Republican senator used his time during a committee hearing to lob partisan insults over a new Homeland Security initiative to combat disinformation. The proposed Disinformation Governing Board, which is aimed pushing back against false or misleading online content, has drawn criticism from Republicans and Democrats alike for its potential threat to free speech, but DHS secretary Alejandro Mayorkas told the Senate Appropriation Committee the advisory group would get involved only when such content posed a threat to national security. “With respect to Obamacare, when [Barack …