The collapse of ObamaCare is the tip of the iceberg for the magical Obama presidency.

From the moment he emerged in the public eye with his 2004 speech at the Democratic Convention and through his astonishing defeat of the Clintons in 2008, Barack Obama's calling card has been credibility. He speaks, and enough of the world believes to keep his presidency afloat. Or used to.

All of a sudden, from Washington to Riyadh, Barack Obama's credibility is melting.