Massachusetts July 12, 2017 5:30 pm Republican Geoff Diehl to Challenge Elizabeth Warren Geoff Diehl, a Republican and the co-chair of Donald Trump’s presidential campaign in Massachusetts, faces significant challenges in his quest to unseat Democratic Sen. Elizabeth Warren. US & World Videos 24:50 @Issue: Biden signs the foreign aid bill, and a retrospective of Boston's 2024 Olympics bid 2:15 Opening statements made, witnesses called in hush money trial against Donald Trump 24:46 @Issue: Trump “hush money” trial underway 2:08 Boston announces first chief climate officer 3:07 What's working for Biden's campaign — and what's not working for Trump
