I cannot shake the belief that House of Representatives managers seeking to persuade U.S. senators to allow additional witnesses in the trial of Donald John Trump must be feeling an unbearable sense of frustration.

Surely they know that the Republican-led Senate has dug in to oppose any witness testimony and to likely acquit the president of high crimes and misdemeanors.

Yet the managers, led by House Intelligence Committee Chairman Adam Schiff, are slogging forward with their arguments to allow “fact witnesses” to tell senators what they know about Trump’s soliciting a foreign government for political help.

They are better men and women than I would be were I put into that position.

These individuals might as well be talking to the furniture arrayed before them in the Senate chamber. Most of the individuals who are sitting in their chairs are conducting a shameful sham that they are presenting to us as a trial.