Minnesota files lawsuit to stop surge of federal agents into state; Justice Department starts criminal investigation into Federal Reserve Chairman; Americans warned to leave Iran as protests continue.

Additional Live Streams Additional Live Streams Live ABC News Live Live Clayton County, MS officials hold news conference after shooting Live ...

"This Week" co-anchor Jonathan Karl sits down with House Speaker Emerita Rep. Nancy Pelosi for a conversation about her nearly four-decade career in Washington as she prepares to leave office.

Winter storm pushing across the country ahead of New Year's Eve; new CDC report shows flu cases soaring nationwide; reports suggest CIA drone strike was behind attack on Venezuela port facility.