Here are the impeachment-related stories Grassfire is tracking for Thursday, January 16:

WATCH: Democrats walk articles of impeachment to the Senate

Senate takes over Trump’s impeachment after House handoff

Pelosi hands out souvenir pens, Dems slammed for gloating as House delivers Trump impeachment articles

OPINION: Pelosi’s sham Trump impeachment is abuse of power for political gain

Sen. Cruz: Nancy Pelosi's impeachment circus is done

Trump's trial a major test for McConnell, Schumer

Sessions to Moderate GOP Senators Reluctant to Vote for Immediate Impeachment Acquittal: 'Toughen Up'

'Impartial Justice'? What to watch in Trump’s Senate trial

Sen. Graham shreds Schumer for trying to dictate impeachment rules (video)

Impeachment Trial Kicks Off With GOP Moderates Under Pressure

Dem Sen. Merkley: Trump’s Lawyers 'Deserve to Pull in Whoever They Feel Contributes to Their Case'

Sen. Paul: Hunter Biden ‘Should Testify as a Material Witness’ in Senate Impeachment Trial

Sen. Blackburn calls on Warren, Sanders, Klobuchar, Bennet to recuse from impeachment trial