he is trying to defend himself from cooperating. >> and significant also in the letter is information that mccarthy received briefings from the security threats that had come to capital immediately following january 6th, and did he convey those to the president of the united states, and what they are getting of is was the president aware of the threats before and after january 6th. all of these things are going to the question of whether the president obstructed congress. the language of the statue is whether a individual structurally or impedes the carrying out of congressional duties. trying to cover that up is going to be evidence of trying to support that. the and that is what they are trying to lay out in the letter, and it indicates how serious this was, and then he quickly changed his tune after going to