Indiana's Joe Donnelly Ranked Least Effective Democrat in Senate

Award-winning study says Donnelly worst at 'moving agenda through legislative process'

Cruz, Lee Warn Trump Not to Tap Former Clinton Aide as Ambassador to Colombia

Senators say career diplomat's consideration 'deeply troubling'

Pelosi Thanks 'Dreamer's' Parents for Bringing Family to U.S. Illegally

U.S. Officials: U.S. Special Forces Killed, Wounded in Niger Ambush

Michelle Obama: People Don't Trust Politicians Because Republicans Are 'All Men, All White'

Trump's Pardon of Former Sheriff Arpaio Stands After Court Challenge

Speier: No 'Specific Evidence' of Collusion Between Trump and Russian-Linked Facebook Ads

Hospital Ship USNS Comfort Arrives in Puerto Rico to Provide Aid After Hurricane Maria

New Pentagon Corridor Honors National Guard, Displays 380-Year History

Burr: No 'Initial Findings' of Any Russian Collusion in 2016 Presidential Election