NBC News: “Joe Biden’s presidential campaign on Tuesday launched a highly personal broadside at Sen. Ron Johnson, R-Wisc., chairman of the Senate Homeland Security and Governmental Affairs Committee, for pushing forward a committee inquiry into the presumptive Democratic nominee’s past dealings with Ukraine while he was vice president.”
“Among other things, the Biden campaign is accusing Johnson of being opaque about whether he is, in effect, ‘party to a foreign influence operation against the United States’ by receiving materials from pro-Russian foreigners as part of the committee’s probe.”
“In recent media reports, pro-Russian Ukrainians said they’ve passed materials to the committee.”
“A committee staffer told NBC News it is ‘false’ the committee has received any ‘oppo,’ or opposition research, without responding directly to whether that covers any materials from foreign sources.”