I was thinking itmight be Dana Rohrabacher.
(F.B.I. Once Warned G.O.P. Congressman That Russian Spies Were Recruiting Him)
Its an open secret that even his fellow Republicans think he is on Putin's payroll- they don't care, of course, as long as he votes for tax cuts for the wealthy...

About that time, House Majority Leader Kevin McCarthy, a fellow California Republican, was recorded during a private conversation with GOP leaders making what he would later call a joke: “There’s two people I think Putin pays: Rohrabacher and Trump.” This conversation occurred after a meeting McCarthy and House Speaker Paul Ryan had with the Ukrainian prime minister in which they discussed the Kremlin’s efforts to finance politicians who oppose democracies in Eastern Europe.