I will agree that as things change there may be some areas where it is appropriate to grant Congress that power but it isn't supposed to be convenient or easy. The process of amendment is there to modify the balance of power between the States and the general government. It isn't supposed to be "efficient", and it is that way on purpose and for good reasons. The idea that simply because a majority of Congress voted for it and the President signed off on it is sufficient to make it a valid exercise of the ommerce power is an abject subversion of that intent.
I thought Constitutional amendments had to be ratified by the states. In any case I agree with your assessment. I too think the Feds have WAY too much power, especially in Law Enforcement and Education. Oh, and now Commerce. Thanks for the enlightenment.