They are claiming that a simple majority can determine he is guilty of insurrection, and banned from holding office under the 14th Amendment. I think this is extremely shaky legal grounds, but damaging none the less. The media will proclaim "Trump is ineligible" and enough people will accept it to damage him.
No person shall be a Senator or Representative in Congress, or elector of President and Vice President, or hold any office, civil or military, under the United States, or under any state, who, having previously taken an oath, as a member of Congress, or as an officer of the United States, or as a member of any state legislature, or as an executive or judicial officer of any state, to support the Constitution of the United States, shall have engaged in insurrection or rebellion against the same, or given aid or comfort to the enemies thereof. But Congress may by a vote of two-thirds of each House, remove such disability.
If we accept the democrat interpretation of the 14th amendment, then any person can be removed from office and prevented from seeking any other office by simple censure for "supporting insurrection". Cruz, Hawley and others could be removed by 50 votes + Kamala for merely speaking up about election fraud.
The Demoncrats will define “insurrection” as any opposition to them. This must be squashed or we Patriots will be doomed...