Section 3.
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.
Section 5.
The Congress shall have the power to enforce, by appropriate legislation, the provisions of this article.
First, even if President Trump did participate in an insurrection (which I don't believe he did), he is only prohibited from holding office - not being elected to office. What happens if he is elected but not capable of holding office is not clear. Maybe the House would have to select the president. Additionally, Congress has the power to remove any prohibition on office due to insurrection at any time. Thus any insurrection accusation should not keep him off the ballot.
Second, Congress in empowered to enforce this amendment. It says nothing about state officials being able to.
The constitution gives complete authority over the Presidential Elector selection to the states.
And since none of us are on the Supreme Court, it is foolish to constantly debate this. WE can do nothing about it. You guys need to get worked up over something else.