Wife of late senator John McCain will serve as US ambassador to UN Agencies for Food and Agriculture; former Arizona senator will serve as ambassador to Turkey

Ady Barkan, an ALS sufferer name-checked by Warren at recent Democratic debate, says issue 'too important for 30-second sound bites shouted between ten different candidates'

Jewish senator again introduces bill barring sale of weapon to anyone under 21, after 19-year-old is charged in deadly synagogue shooting in her home state