It's not the Senate's job to investigate what the democrats didn't do if it is show me where that rule is?Nowhere is it written that only witnesses who testified in the impeachment can testify in the Senate. You're literally making that up out of whole cloth.Yes witnesses are called those that were part of the investigationBecause it's supposed to be a trial. Witnesses are generally called in trials.Who says the Senate has to call any witnesses?Who says the House has to call every witness they wan for the Trial??The witnesses from the Democrat investigation and no new witnesses
In impeachment proceedings, the House of Representatives charges an official of the federal government by approving, by majority vote, articles of impeachment. A committee of representatives, called “managers,” acts as prosecutors before the Senate. The Senate sits as a High Court of Impeachment in which senators consider evidence, hear witnesses, and vote to acquit or convict the impeached official. In the case of presidential impeachment trials, the chief justice of the United States presides.