Impeachment...Or Show Trial? Pelosi's Anonymous Accusers.

Why are the Democrats' witnesses for the prosecution (the "whistleblowers") allowed to remain anonymous and avoid cross-examination? Pelosi was roped into proceeding with impeachment of President Trump against her political judgement and now she is beginning to pay the price as the case against Trump continues to unravel. She still has the media on her side, but how long will that last, as new Ukraine facts about Biden and the non-blackmail of Zelensky continue to seep out?