Article I, Section 6. Paragraph 2. "No Senator or Representative shall, during the Time for which he was elected, be appointed to any civil Office under the Authority of the United States, which shall have been created, or the Emoluments whereof shell have been encreased during such time, and no Person holding any Office under the United States, shall be a Member of either House during his Continuance in Office.
I don't know how many times this clause has been violated by Presidential appointments of Senators to Cabinet posts and other high-level positions in government, but I suspect it's many.
But, neither Sen Clinton (the smartest woman in the world) nor President-elect Obama (the one true leader) appear to have noticed this clause. Which means neither of them has read the US Constitution, or that neither of them take it seriously. Not that they're alone in this--according to the text of the majority of legislation that's passed in each legislative session, it's clear that nearly all Congressmen and Senators are largely ignorant of the actual text and historical meaning of the Constitution, the Bill of Rights and in many cases, the law itself.
The thing that allows these failings to endure unpunished is that all elected officials are either guilty of gross violations of their Oaths of Office, or blindly going along to get along, and are afraid that if a spade is called a spade, any and all of them could be found guilty of these violations.
So, they all ignore the Constitution and pretend that they are acting lawfully, and that none of the unwashed masses are intelligent enough to point out the obvious.
Consider it pointed out.
Tip of the battered grey fedora to James Babb for his alertness.
People should not be afraid of their governments; governments should be afraid of their people.