The serious part of the federal judiciary are still burned up about Marbury v. Madison (1803), that while it was the first time in which the Supreme Court asserted the right to overturn a federal law as unconstitutional, just as importantly, it ordered the president to comply with their order, and he *refused*.
This was a huge increase in the power of the office of the presidency.
This obviously hit a serious nerve with this judge. By Obama challenging the right of the SCOTUS to find a law unconstitutional, he is threatening the balance of power in Washington between the three branches.
Essentially this would mean that the POTUS is supreme and can ignore the SCOTUS. And that is throwing down a gauntlet, big time.
Where in the constitution does it say the USSC is the final determinate as to what is or is not constitutional? Nowhere. There is a reason early presidents told the USSC to pound sand. They were following the constitution.