Wouldn't she have trouble getting a security clearance? I'm under the impression that many Senators receive secure briefings.
Basically you can have 2 people with the same base clearance but they would have completely different access to information. The security clearance doesn’t even give you access to information by having it, it simply means that you have passed the risk assessment which means you can be cleared to handle classified information and you would handle it in a legal and responsible manner, which regardless what you think about Manning that is clearly not the case.