U-h-h-h-h ... well, it's even worse than that. The phrase is "world's greatest deliberative body."
What an arrogant, presumptious, and un-substantiable claim!
What does the phrase "world's greatest deliberative body" actually mean?
It's not the oldest - Britain's Parliament is older, it doesn't represent the World's largest Democracy, that would be India.
It has no claim to have the best minds - Kennedy?, Kerry? any number of crooks and morons you could name..
So just WHAT makes it the "world's greatest deliberative body"?
They have delusions of adequacy.