WHY are democrat lawmakers being locked out of dept of ed?

Per recent news, as of this morning democratic law makers are locked out of dept of Ed but Elon Musk is allowed in/out

My question is…why? Is this for Elon to illegally collect more information or is there an important vote that dictates dept of education fate happening within? (I was under the impression congress voting happened elsewhere)

Edit: I was confused with how said news was presented across platforms, made it super confusing…After looking at comments from what I understand, the executive branch (or someone authorized by executive branch) is legally allowed to enter DOE where as congress members are not authorized to enter. However, the issue lies in what information Musk is gathering in DOE…feel free to correct me if I’m wrong though