I’ve been to the Texas Capitol while the legislature was in session. It was quite interesting to sit in the gallery to see and hear the members speaking after previously only seeing them on TV. The security seemed to be quite good, with metal detectors and screening required to get inside the buildings. The guards were friendly and gave helpful directions on good places to go. Once inside, visitors could freely walk around most anywhere including eating lunch in the same cafeteria where members were eating. There was no obvious way to get from the gallery to the house floor, many feet below the gallery floor. I’m sure the actual passage had additional security and screening.
We took our younger daughter and one of her friends to the Capitol when she was in high school. I had a ccp and was carrying. My ccp was “judge/prosecutor”, meaning I can go anywhere, but sometimes you have to educate people about that and I was ready to do so. We walk inside and there’s a sign that says “CCP holders this way”. They checked my card and said I was good to go. Love me some Texas.