It is my contention that federal welfare is not unconstitutional in DC or other federal properties. The states have no limitation enumerated for their own general welfare since it is sometimes indistinguishable from their domestic tranquility and security. An example of the this is the Erie [post] Canal under Dewitt Clinton (who, unfortunately, lost to Madison).

However, unemployment compensation, at-will, would work more efficaciously in providing for the general welfare, than welfare as we currently know it.