Why is Gang of Six plan "practical" but Cut, Cap and Balance will never pass?

And is it too much to ask our esteemed lions of the Fourth Estate toiling in the White House Press Corps to at least ask the president why he opposes a constitutional amendment requiring a balanced budget and a supermajority in both chambers of Congress to raise taxes?

That's good enough for a thorough discussion it seems to me.  Let's look at the Constitution for a moment, shall we?  What exactly does the Constitution do?  The answer is that it is a charter for limited government.  It would seem that a balanced budget amendment would be in keeping with that and should be a part of the document.  If there is anything that should be in that document, it should be something that "check and balance" those who would seek too much power.  That is what is at stake here.  By running huge deficits, the Democrats are amassing too much political power and need to be checked.  Therefore, this is as good a reason as any to put in such an amendment to the Constitution.  If not now, when?  If not "us", who?