House Democrats charged with prosecuting the impeachment case against President Trump on Wednesday scaled back their fiery language following a rare scolding from Chief Justice John G. Roberts Jr., as they began laying out their case for Trump’s removal from office for pressuring Ukraine to help him win reelection.

The first substantive day of President Trump’s impeachment trial opened Tuesday with unexpected internal GOP dissension over its structure, as Senate Majority Leader Mitch McConnell (R-Ky.) was forced to revise his proposed rules at the last minute to accommodate a brewing rebellion in his ranks.

Donald Trump’s impeachment trial begins in earnest in the Senate on Tuesday in a rare use of the constitutional mechanism for ousting a president that has only deepened the polarization of U.S. voters ahead of presidential elections in November.

With President Trump’s impeachment trial getting underway, Democrats are intensifying their demands for more testimony and documents that could add to the already voluminous evidence against him and bolster their case by shedding new light on several key questions.

Supreme Court Chief Justice John Roberts was sworn in Thursday to preside over the Senate impeachment trial of President Donald Trump.