NBCUniversal Inc. July 18, 2019 4:41 pm WATCH: Catholics Gather at Capitol in Protest of Migrant Detention Centers Hundreds of Catholics from across the nation gathered at the U.S. Capitol to protest detention centers at the southern border. 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