Senate Democrats held a press conference just hours before President Trump's big tariff reveal, with Sen. Chuck Schumer urging Republicans to join on a measure to block tariffs on Canadian goods. ––– Subscribe to ABC News on YouTube: https://abcnews.visitlink.me/59aJ1G ABC News is your daily source of breaking national and world news, exclusive interviews and 24/7 live streaming coverage. Download the ABC News app for the latest headlines and alerts: https://abcnews.go.com/devices Watch 24/7