Wait, what?  There is no "good and welfare clause."  As the Cato blog reports:

House Judiciary Committee Chairman John Conyers (D-MI) was asked on Friday where in the Constitution Congress gets the power to force people to buy health insurance.  He said, “Under several clauses, the good and welfare clause and a couple others.”

As it happens, there is no “good and welfare clause” — which Conyers should know, as both judiciary chairman and a lawyer.  But even if you excuse his casual use of constitutional language, what he probably means — the General Welfare Clause of Article I, Section 8 — is not a better answer.  What that clause does is limit Congress’s use of the powers enumerated elsewhere in that section to legislation that promotes ”the general welfare.” ... In any event, the General Welfare Clause doesn’t give Congress any additional powers — and I’d be curious to know what the other “several clauses” are.

Read more -- and watch the video of this exchange -- here.