This is a greater concern than it looks. If I had to guess, this was a situation largely delegated to the capitol police as it was in DC.
The capitol police have been dropping the ball a lot when it comes to letting potentially violent people near our government officers.
That should probably be investigated…. seriously and not as a part of political witch hunts. It's only a matter of time until that corridor is exploited by people who are willing to act on that doctrine of no truth but power.