My understanding is that the three branches of government are all necessary in fully vetting a law. They all three play a part in the check and balance process. It is the JOB of SCOTUS to determine if a law, duly passed though it might be, is Constitutional when brought before them as a suit. Justice Roberts and the other cohorts on his side failed to do their job as defined by the Constitution. I saw his interpretation as a cowardly way to appease the executive branch rather than “balance” it.
Yes but, the branches were given a set of unique powers. The senate has control of treaty and appointments. The house controls the purse strings. Revenue. Taxing authority.
If Øbamacare is a tax, then the house controls it. Or should at least in theory. These days the Constitution doesn’t seem to mean much to some people. Ahem! Obama!