A guest on Tucker Carlson's show is pushing the claim that people inside the US government helped plan the September 11 attacks, and is calling on Trump to open a new investigation.

• The claim goes beyond the usual "they knew and did nothing" argument to say officials actively planned the attacks.
• The stated motive is manufacturing a reason to send American troops to war.
• Documents are said to back this up, though none are described in detail.
• The ask is for Trump to set up a new presidential 9/11 commission staffed with people considered trustworthy.
• Anyone found responsible should be tried for treason, per the claim.

Outlook: No sign the White House is moving on this, so it stays a pressure campaign in conservative media for now.