> I agree with the more open approach, but shouldn't her office have a simple keycard or combo lock on the door?

Congressional offices are frequent meeting spaces with people who do not work there. Their job, after all, is to represent the public. Locking the public out of their offices is kind of antithetical to the job description.

it was somebody else's account. Also, see @foone's thread here:

https://twitter.com/Foone/status/1346924327996772354

tl;dr: the government has appropriate computer security in place to prevent this sort of thing, and it's not clear what the deal was with that particular computer.

Yeah it’s definitiv a different desk than the ohne in the picture with the guy who broke into pelosis office.

how hard is <window key> + L to lock your screen?

When you hear the mob screaming outside, glass breaking, and are likely being told to evacuate by messages on your computer and security outside? I wouldn't bet that I'd remember. Not locking your screen is as expected as it is forgivable under the circumstances.