“Come senators, congressmen
Please heed the call
Don’t stand in the doorway
Don’t block up the hall
For he that gets hurt
Will be he who has stalled
There’s a battle outside
And it is ragin’.
It’ll soon shake your windows
And rattle your walls
For the times they are a-changin’.”
From, “The Times they are a changin”, by Bob Dylan.
The Constitution of the United States:
Article I:
“The House of Representatives shall chuse their Speaker and other Officers; and shall have the sole Power of Impeachment.”
“The Senate shall have the sole Power to try all Impeachments.”
Article II
“The President, Vice President and all civil Officers of the United States, shall be removed from Office on Impeachment for, and Conviction of, Treason, Bribery, or other high Crimes and Misdemeanors.”
Notice the word Misdemeanors.
The U.S. House of Representatives can indeed impeach a U.S. Senator. They did so to Senator William Blount of Tennessee in 1797. Senator Blount was expelled from the Senate before Impeachment proceedings could begin. There has been no court case to determine otherwise. Of course, the Senate and the House have the power to expel their own members.
There is a references page on the Petition to Impeach Senator Obama site.
Barack Obama Impeachment 