April 4, 2017 5:40 pm State Rep. Diehl Expected to Challenge Sen. Warren in 2018 Republican State Rep. Geoff Diehl says he plans to file paperwork this week and set up a federal campaign account in order to challenge Democratic Sen. Elizabeth Warren in 2018. US & World Videos 14:37 @Issue extra: A retrospective on the Boston 2024 Olympics bid 3:07 What's working for Biden's campaign — and what's not working for Trump 4:10 Thoughts as jury selection gets underway in Trump's hush money trial 1:06 Former Sen. Joseph Lieberman dead at 82 1:23 Majorie Taylor Greene files motion to oust Mike Johnson from House speakership