Congressional Republicans began breaking ranks on Thursday to join Democrats in demanding that Attorney General Jeff Sessions recuse himself from overseeing an investigation into contacts between the Trump campaign and the Russian government. Those calls came after the disclosure that Sessions himself spoke with the Russian ambassador last year, in seeming contradiction to his testimony at his confirmation hearing. The partisan furor that broke out with the Justice Department’s acknowledgment of the contacts late Wednesday began to take on a bipartisan sheen as the controversy spilled over into Thursday morning.