See How Trump’s Impeachment Trial Will Affect 2020 Democratic Race

At the time of the call, Trump was withholding $391m in military aid from Ukraine, and conditioned a White House meeting on the probes, according to witnesses. Trump denies any wrongdoing.

The impeachment inquiry centred on a call between Trump and Ukraine’s president in which Trump asked for a probe into the Bidens. Trump also wanted a probe into a conspiracy theory about the 2016 elections.

Four Democrats running to challenge United States President Donald Trump in November’s general election have a new headache to deal with – a mandatory obligation that will keep them off the campaign trail for at least two weeks, if not longer.

That means sitting in silence in the US capital while the others in the race, including frontrunners former Vice President Joe Biden and former South Bend, Indiana, Mayor Pete Buttigieg, spend the last few weeks before critical caucuses and primaries in Iowa and New Hampshire out actually campaigning.

As sitting US senators, Bernie Sanders, Elizabeth Warren, Amy Klobuchar and Michael Bennet are constitutionally obligated to be in Washington, DC, for the duration of Trump’s impeachment trial, which is expected to begin in earnest next week.