The impeachment trial of US President Donald Trump has begun, with Democrats and Republicans battling over a resolution on the rules governing the trial.
In a bitter debate over proposed rules, Democrats accused Republicans of a cover-up.
At the last moment, Senate Majority Leader Mitch McConnell altered his proposed rules for the impeachment trial. Gone was the possibility that the evidence collected during the various House inquiries might not be entered into evidence in the Senate trial.
The Democratic Party House managers and White House lawyers would now have three days and not two to make their opening statements.
Trump is charged with abuse of power and obstruction of justice.
Al Jazeera's Shihab Rattansi reports from Washington, DC on a long opening day that is stretching well into the night.
The two political leaders in the Senate started 2020 sparring over how the upper chamber will proceed on Trump's impeachment trial. Mieke Eoyang and Jonathan Allen react. Aired on 01/03/20. Senators Lisa Murkowski and Susan Collins said they'd be likely to vote for additional information in President Trump's impeachment trial. New evidence is bolstering the claims of Lev Parnas, an indicted associate of Rudy Giuliani, that he was connected to the Trump administration — including photos with Donald Trump Jr., Ivanka Trump and other Republican officials. After months of arguments and build-up, US President Donald Trump's impeachment trial is set to begin in the Senate later on Tuesday.
Trump is accused of abusing the powers of his office by trying to force Ukraine's leader to investigate a political rival and of obstructing Congress's investigation.
Al Jazeera's Alan Fisher takes a look at the events that led up to this point. US Democrats have ruled out a "witness swap" with Republicans in President Donald Trump's impeachment trial.
Lawmakers who are seeking to remove the president from office hope to hear testimony from his former National Security Adviser John Bolton.
But Democrats refused any deal to allow the son of former US Vice-President Joe Biden to be called as a witness.
Mr Trump is accused of abuse of power and obstruction of Congress. He strongly denies any wrongdoing.