President Donald Trump’s impeachment trial could be wrapped up in about two weeks, as Democrats decry the process and their push to call witnesses threatens to fail.

Shortly after the trial began in earnest on Tuesday, Senate Majority Leader Mitch McConnell changed proposed rules to allow each side three days of opening arguments over 24 hours. The Kentucky Republican’s initial resolution had only two days. A 16-hour question-and-answer session from senators would follow, as would an eventual vote on hearing from witnesses and seeing documents.