Former president Donald Trump incited an insurrection and has faced little consequence for it so far. As such, senators must take on their constitutional duty to sit as impartial jurors in the impeachment trial, regardless of any lingering concerns -- unfounded we believe -- that the process is unconstitutional.

Conservative attorney and Trump critic George Conway discusses the arguments presented for former President Trump on the eve of his second impeachment trial.

On Tuesday, the Senate will begin the impeachment trial of former President Donald Trump over a charge that he incited the insurrection at the US Capitol on January 6. And Wisconsin Sen. Ron Johnson thinks he knows why.

• Trump lawyers say he didn't incite riots by saying 'fight like hell' • GO THERE: Manu Raju answers your impeachment trial questions • Analysis: The uncomfortable truths about American society

• Trump lawyers say he didn't incite riots by saying 'fight like hell' • GO THERE: Manu Raju answers your impeachment trial questions • Analysis: The uncomfortable truths about American society

House impeachment managers filed their response to former President Donald Trump's initial pretrial brief shortly after 12 p.m. ET on Monday, their last opportunity to push back ahead of the impeachment trial on the claims that both Trump and most Senate Republicans are making that the trial itself is unconstitutional. Read their briefing below:

On Tuesday, the Senate will begin the impeachment trial of former President Donald Trump over a charge that he incited the insurrection at the US Capitol on January 6. And Wisconsin Sen. Ron Johnson thinks he knows why.