Dutch Uncle
* Tertia Optio * Defend the Constitution
Treason would be impossible to prove. They have to give aid and comfort to the enemy in time of war.
I think a jury would be less sympathetic to assaulting a peace officer than insurrection. All 691 arrested have already been charged but I think they are still seeking the identify of some. 105 have entered guilty pleas.
Not a lawyer but there's a first part to that: https://constitution.congress.gov/browse/essay/artIII_S3_C1_1_2/
Treason against the United States, shall consist only in levying War against them,
Is attempting to overthrow the Capitol, kill off the VP and Congress "levying War" against the United States?