Republican and Democratic leaders in the United States Senate have agreed to a timeline for the second impeachment trial of former President Donald Trump that begins on Tuesday, said Senate Majority Leader Chuck Schumer. Trump’s lawyers are denying the charge that the then-President incited his supporters to storm Capitol Hill. They are also arguing it is unconstitutional to hold a trial for a former president. But Democrats prosecuting Trump say he has no valid defense. Al Jazeera’s Heidi Zhou-Castro reports from the US capital, Washington, DC, the US.