If Obama ignores this ruling, then these are as clear a grounds as any for impeachment. It would be hard to spin that for the public.
A full 30 to 40% of our fellow Americans will support this President and his political party no matter what crimes are committed by them or their drones in the bureaucracy (see the IRS and EPA) . The media will make sure to make them sound like the majority of the country and will continue to make sure the GOP remains the party that is scared of it’s own shadow. Impeachment WILL NEVER happened no matter how high the crimes and misdemeanors. Poor Richard Nixon must be spinning around in his grave. Democrats and their minions are fully exempt from constitutional checks and balances. They will find a way to circumvent this court ruling too.