Let's say there's proof Capitol police let Antifa insurgents through barriers so they could breach the Capitol. If there was proof a political group asked for Antifa's assistance to execute that event and there just happened to be a threat to the nation requiring invoking the Insurrection Act, would it not be in the Executive power's interest to take action to investigate and inform the public that such a thing happened?

The Executive figure is granted full power and authority over the NSA and CIA resources. The clock is ticking.