Now that Rep. Ron Paul is again a presidential candidate, his constitutional views will come under increasing scrutiny, as happened yesterday when he was interviewed by Chris Wallace on Fox News Sunday. Not surprisingly, critics immediately leapt on Paul’s “crankish view” that Social Security, Medicare, and other such programs are unconstitutional. Even Wallace seemed taken aback, citing the document’s General Welfare Clause:

The Constitution authorizes a government of limited powers. Congress’s main legislative powers are enumerated in Article I, Section 8—there are only 18. But since the New Deal those powers have been read as authorizing Congress to do far more than was ever imagined for our first 150 years under the Constitution. This has led to effectively unlimited government.