Jeff Sessions' many denials on Russia, explained

Attorney General Jeff Sessions returned to Capitol Hill on Tuesday for another round of heated testimony regarding what he knew about the Trump campaign's interactions with Russians.

Democrats pressed Sessions on his past denials, some of which are losing credibility as new reports emerge about contacts between Trump associates and Russians. Since Sessions' previous testimony on the Hill in mid-October, President Donald Trump's son, Donald Trump Jr., acknowledged some private communications with WikiLeaks during the campaign. And unsealed court records revealed that Trump campaign adviser George Papadopoulos had repeated contacts with Russians and pleaded guilty to the FB...